2018 United States Senate election in California explained
Election Name: | 2018 United States Senate election in California |
Country: | California |
Type: | presidential |
Ongoing: | no |
Previous Election: | 2012 United States Senate election in California |
Previous Year: | 2012 |
Next Election: | 2024 United States Senate election in California |
Next Year: | 2024 |
Election Date: | November 6, 2018 |
Turnout: | 56.42% |
Image1: | File:DianneFeinstein2018.jpg |
Candidate1: | Dianne Feinstein |
Party1: | Democratic Party (United States) |
Popular Vote1: | 6,019,422 |
Percentage1: | 54.16% |
Candidate2: | Kevin de León |
Party2: | Democratic Party (United States) |
Popular Vote2: | 5,093,942 |
Percentage2: | 45.84% |
Map Size: | 300px |
U.S. Senator |
Before Election: | Dianne Feinstein |
Before Party: | Democratic Party (United States) |
After Election: | Dianne Feinstein |
After Party: | Democratic Party (United States) |
The 2018 United States Senate election in California took place on November 6, 2018, to elect a member of the United States Senate to represent California, concurrently with other elections to the United States Senate, elections to the United States House of Representatives, and various state and local elections.
Under California's non-partisan blanket primary law, all candidates appear on the same ballot, regardless of party. In the primary, voters may vote for any candidate, regardless of their party affiliation. In the California system, the top two finishers — regardless of party — advance to the general election in November, even if a candidate receives a majority of the votes cast in the primary election. Washington and Louisiana have similar "jungle primary" style processes for U.S. Senate elections, as does Mississippi for U.S. Senate special elections.
The candidate filing deadline was March 8, 2018, and the primary election was held on June 5, 2018.[1]
Democratic incumbent Dianne Feinstein won re-election in 2012 with 63% of the vote, taking the record for the most popular votes in any U.S. Senate election in history, with 7.86 million votes.[2] Feinstein, at the time, was the ranking member of the Senate Judiciary Committee. She turned 85 years old in 2018, leading some to speculate that she would retire in January 2019,[3] [4] as her long-time colleague Barbara Boxer did in January 2017. However, Feinstein ran for reelection to her fifth full term, winning 44.2% of the vote in the top-two primary; she faced Democratic challenger Kevin de León in the general election, who won 12.1% of the primary vote. For the second time since direct elections to the Senate began after the passage of the Seventeenth Amendment in 1913, no Republican appeared on the general election ballot for the U.S. Senate in California. The highest Republican finisher in the primary won only 8.3 percent of the vote, and the 10 Republicans only won 31.2 percent of the vote among them.
In the general election, Feinstein defeated de León by an eight-point margin, 54% to 46%. This was Feinstein's closest election since 1994, as well as her last run for elected office, as she died in office in September 2023.[5]
Candidates
Democratic Party
Advanced to general
Eliminated in primary
- Adrienne Nicole Edwards, Vice Chairwoman on the HDT Community Development Foundation board[10]
- Pat Harris, attorney[11] [12]
- Alison Hartson, national director of Wolf PAC[13] [14]
- David Hildebrand, legislative analyst[15] [16]
- Herbert G. Peters, retired aerospace engineer and candidate for U.S. Senate in California in 2016[10]
- Douglas Howard Pierce[10]
- Gerald Plummer[10]
- Donnie O. Turner, Air Force veteran[10]
Withdrawn
Declined
Republican Party
Declared
- Arun K. Bhumitra, businessman[10]
- James P. Bradley, businessman[25]
- Jack Crew, bus driver[25]
- Erin Cruz, published author[26]
- Rocky De La Fuente, entrepreneur and perennial candidate[27]
- Jerry Joseph Laws, candidate for the U.S. Senate in 2016[25]
- Patrick Little, neo-Nazi and Holocaust denier[28] (denounced by California Republican Party)
- Kevin Mottus, candidate for the U.S. Senate in 2016[10]
- Mario Nabliba, scientist[10]
- Tom Palzer, activist, retired city planner and candidate for the U.S. Senate in 2016[25]
- Paul Allen Taylor, businessman[29]
Withdrawn
Declined
Libertarian Party
Declared
- Derrick Michael Reid, retired attorney and engineer and candidate for president in 2016[43]
Green Party
Declared
- Michael V. Ziesing (write-in)[44]
Peace and Freedom Party
Declared
No party preference
Declared
- Colleen Shea Fernald, perennial candidate[25]
- Rash Bihari Ghosh[25]
- Tim Gildersleeve, businessman and researcher[45]
- Michael Fahmy Girgis[25]
- Don J. Grundmann, California Constitution Party chairman and perennial candidate[46] (Constitution Party)
- Jason M. Hanania[25]
- David Moore (Socialist Equality Party)[47]
- Lee W. Olson[48]
- Ursula M. Schilling (write-in)[44]
- Ling Ling Shi, evangelist[49]
Withdrawn
Notes
Primary election
Fundraising
Campaign finance reports as of May 16, 2018 |
---|
Candidate | Total receipts | Total disbursements | Cash on hand |
---|
| Dianne Feinstein (D) | $9,953,612 | $5,342,658 | $7,035,307 |
| Kevin de León (D) | $1,135,538 | $441,847 | $693,689 |
| Pat Harris (D) | $703,982 | $650,225 | $51,017 |
| Alison Hartson (D) | $298,296 | $189,652 | $108,643 |
| Arun K. Bhumitra (R) | $53,668 | $40,835 | $12,832 |
| David Hildebrand (D) | $27,111 | $25,816 | $1,294 |
| Erin Cruz (R) | $26,442 | $23,190 | $3,251 |
| Douglas Howard Pierce (D) | $9,000 | $62,392 | $11,200 |
| Paul Allen Taylor (R) | $9,128 | $8,803 | $324 |
| Tom Palzer (R) | $0 | $45 | $45 |
| David Moore (SEP) | $3,480 | $3,480 | $0 |
Source: Federal Election Commission[56] | |
---|
Polling
Poll source | Date(s) administered | Sample size | Margin
| James P. Bradley (R) | Erin Cruz (R) | Pat Harris (D) | Rocky De
(R) | Kevin de León (D) | Dianne Feinstein (D) | Alison Hartson (D) | Patrick Little (R) | Other / Undecided |
---|
UC Berkeley[57] | May 22−28, 2018 | 2,106 | ± 3.5% | 7% | – | – | – | align=center | 11% | align=center | 36% | – | – | align=center | 46%[58] |
Emerson College[59] | May 21–24, 2018 | 600 | ± 4.2% | – | 5% | align=center | 6% | 4% | align=center | 6% | align=center | 38% | 4% | – | align=center | 38%[60] |
YouGov[61] | May 12–24, 2018 | 1,113 | ± 4.0% | 6% | 2% | 2% | 4% | align=center | 11% | align=center | 36% | 1% | 1% | align=center | 37%[62] |
SurveyUSA[63] | May 21, 2018 | 678 | ± 6.1% | 9% | 2% | 2% | 3% | align=center | 11% | align=center | 36% | 1% | 0% | align=center | 35%[64] |
Public Policy Institute of California[65] | May 11–20, 2018 | 901 | ± 4.1% | – | – | – | – | align=center | 17% | align=center | 41% | – | – | align=center | 41%[66] |
USC Dornsife/Los Angeles Times[67] | April 18 – May 18, 2018 | 517 | ± 4.0% | 3% | 1% | 2% | 0% | align=center | 7% | align=center | 31% | 1% | 2% | align=center | 51%[68] |
Gravis Marketing[69] | May 4–5, 2018 | 525 | ± 4.3% | align=center | 19% | 13% | – | – | 8% | align=center | 32% | 6% | – | 21%[70] |
SurveyUSA[71] | April 19–23, 2018 | 520 | ± 5.5% | – | – | – | 8% | 8% | align=center | 38% | 4% | align=center | 18% | 23%[72] |
UC Berkeley[73] | April 16–22, 2018 | 1,738 | ± 3.5% | 10% | – | – | – | align=center | 11% | align=center | 28% | – | – | align=center | 49%[74] |
Public Policy Institute of California[75] | March 4–13, 2018 | 1,706 | ± 3.4% | – | – | – | – | align=center | 16% | align=center | 42% | – | – | align=center | 41%[76] |
Public Policy Institute of California[77] | January 21–30, 2018 | 1,705 | ± 3.2% | – | – | – | – | align=center | 17% | align=center | 46% | – | – | align=center | 36%[78] |
UC Berkeley[79] | December 7–16, 2017 | 672 | ± 3.8% | – | – | – | – | align=center | 27% | align=center | 41% | – | – | align=center | 32%[80] |
Public Policy Institute of California[81] | November 10–19, 2017 | 1,070 | ± 4.3% | – | – | – | – | align=center | 21% | align=center | 45% | – | – | align=center | 34%[82] |
Sextant Strategies & Research[83] | September 2017 | 1,197 | ± 3.4% | – | – | – | – | align=center | 15% | align=center | 38% | – | – | align=center | 46%[84] | |
with Timothy Charles Kalemkarian, Caren Lancona, John Melendez, and Stephen SchraderPoll source | Date(s) administered | Sample size | Margin of error | Kevin de León (D) | Dianne Feinstein (D) | Timothy Charles Kalemkarian (R) | Caren Lancona (R) | Patrick Little (R) | John Melendez (D) | Stephen Schrader (R) | Other / Undecided |
---|
SurveyUSA[85] | March 22–25, 2018 | 517 | ± 5.0% | 5% | align=center | 31% | 5% | 2% | 5% | 5% | align=center | 7% | align=center | 42%[86] |
SurveyUSA[87] | January 7–9, 2018 | 506 | ± 4.4% | 4% | align=center | 34% | align=center | 6% | 5% | 5% | 2% | 5% | align=center | 38%[88] | |
with Tom Steyer
with John Cox
with Xavier Becerra, Kevin Faulconer, Brad Sherman, Eric Swalwell, and Ashley Swearingin
Results
Democratic candidates won a combined total of 4,231,444 votes, Republican candidates 2,216,223 votes, and other candidates 223,053 votes.
General election
Debates
Fundraising
Campaign finance reports as of October 19, 2018 |
---|
Candidate | Total receipts | Total disbursements | Cash on hand |
---|
| Dianne Feinstein (D) | $21,100,086.64 | $17,896,407.61 | $4,069,222.18 |
| Kevin de León (D) | $1,572,160.70 | $1,263,113.97 | $309,045.58 |
Source: Federal Election Commission | |
---|
Predictions
Because of California's top-two runoff system, the seat was guaranteed to be won/held by a Democrat since the initial primary produced two Democratic candidates.
Polling
Poll source | Date(s) administered | Sample size | Margin
| Dianne Feinstein (D) | Kevin de León (D) | None | Other | Undecided |
---|
Change Research[101] | November 2–4, 2018 | 1,108 | – | align=center | 42% | 32% | – | – | – |
Research Co.[102] | November 1–3, 2018 | 450 | ± 4.6% | align=center | 47% | 28% | – | – | 25% |
SurveyUSA[103] | November 1–2, 2018 | 806 | ± 4.7% | align=center | 50% | 36% | – | – | 14% |
Probolsky Research[104] | October 25–30, 2018 | 900 | ± 3.3% | align=center | 41% | 35% | – | – | 24% |
UC Berkeley[105] | October 19–25, 2018 | 1,339 | ± 4.0% | align=center | 45% | 36% | – | – | 19% |
YouGov[106] | October 10–24, 2018 | 2,178 | ± 3.1% | align=center | 36% | 29% | 19% | – | 16% |
Public Policy Institute of California[107] | October 12–21, 2018 | 989 | ± 4.2% | align=center | 43% | 27% | 23% | – | 8% |
Emerson College[108] | October 17–19, 2018 | 671 | ± 4.1% | align=center | 41% | 23% | – | – | 37% |
SurveyUSA[109] | October 12–14, 2018 | 762 | ± 4.9% | align=center | 40% | 26% | – | – | 35% |
USC Dornsife/Los Angeles Times[110] | September 17 – October 14, 2018 | 794 LV | ± 4.0% | align=center | 44% | 31% | – | – | 25% |
980 RV | ± 4.0% | align=center | 41% | 30% | – | – | 29% |
1st Tuesday Campaigns[111] | October 1–3, 2018 | 1,038 | ± 3.0% | align=center | 43% | 30% | – | – | 27% |
Vox Populi Polling[112] | September 16–18, 2018 | 500 | ± 4.4% | align=center | 55% | 45% | – | – | – |
Public Policy Institute of California[113] | September 9–18, 2018 | 964 | ± 4.8% | align=center | 40% | 29% | 23% | – | 8% |
Ipsos[114] | September 5–14, 2018 | 1,021 | ± 4.0% | align=center | 44% | 24% | – | 17% | 15% |
Probolsky Research (R)[115] | August 29 – September 2, 2018 | 900 | ± 5.8% | align=center | 37% | 29% | – | – | 34% |
Public Policy Institute of California[116] | July 8–17, 2018 | 1,020 | ± 4.3% | align=center | 46% | 24% | 20% | – | 9% |
SurveyUSA[117] | June 26–27, 2018 | 559 | ± 5.9% | align=center | 46% | 24% | – | – | 31% |
USC Dornsife/Los Angeles Times[118] | June 6–17, 2018 | 767 | ± 4.0% | align=center | 36% | 18% | – | – | align=center | 46% |
Probolsky Research (R)[119] | April 16–18, 2018 | 900 | ± 3.3% | align=center | 38% | 27% | – | – | 35% |
USC Dornsife/Los Angeles Times[120] | October 27 – November 6, 2017 | 1,296 | ± 4.0% | align=center | 58% | 31% | 31% | 10% | – |
Sextant Strategies & Research[121] | September 2017 | 1,554 | – | align=center | 36% | 17% | 28% | – | 19% | |
with Feinstein, de León, and Tom Steyer
with Feinstein, de León, and John Cox
Results
The race had an undervote of around 1.3 million votes compared to the gubernatorial election, likely by Republican voters choosing neither candidate. De León won many of the same counties and congressional districts won by Republican gubernatorial nominee John Cox, as many voters may have expressed opposition to the incumbent senator. No county voted for both Feinstein and Cox. Congressional districts 39, 45, and 48 were the only congressional districts that voted for both Feinstein and Cox.[123] [124]
Results by county
Results by county.
Blue represents counties won by Feinstein.
Cyan represents counties won by de León.
[125] County | Feinstein # | Feinstein % | de León # | de León % | Total |
---|
| 318,377 | 58.4 | 226,950 | 41.6 | 545,327 |
| 267 | 48.8 | 280 | 51.2 | 547 |
| 5,835 | 41.4 | 8,244 | 58.6 | 14,079 |
| 32,418 | 42.9 | 43,108 | 57.1 | 75,526 |
| 7,031 | 40.4 | 10,357 | 59.6 | 17,388 |
| 1,643 | 35.1 | 3,039 | 64.9 | 4,682 |
| 222,349 | 58.3 | 158,748 | 41.7 | 381,097 |
| 2,590 | 37.8 | 4,254 | 62.2 | 6,844 |
| 33,772 | 46.5 | 38,791 | 53.5 | 72,563 |
| 103,491 | 47.7 | 113,557 | 52.3 | 217,048 |
| 2,341 | 34.8 | 4,388 | 65.2 | 6,729 |
| 21,336 | 44.8 | 26,319 | 55.2 | 47,655 |
| 13,121 | 43.3 | 17,150 | 56.7 | 30,271 |
| 2,344 | 39.9 | 3,532 | 60.1 | 5,876 |
| 66,628 | 40.0 | 99,981 | 60.0 | 166,609 |
| 9,599 | 37.9 | 15,748 | 62.1 | 25,347 |
| 8,142 | 44.1 | 10,317 | 55.9 | 18,459 |
| 2,030 | 29.8 | 4,788 | 70.2 | 6,818 |
| 1,565,167 | 57.7 | 1,146,044 | 42.3 | 2,711,211 |
| 13,284 | 41.1 | 19,032 | 58.9 | 32,316 |
| 80,319 | 65.3 | 42,638 | 34.7 | 122,957 |
| 2,749 | 41.1 | 3,939 | 58.9 | 6,688 |
| 15,113 | 49.3 | 15,529 | 50.7 | 30,642 |
| 23,659 | 45.8 | 27,985 | 54.2 | 51,644 |
| 751 | 28.7 | 1,867 | 71.3 | 2,618 |
| 2,001 | 47.7 | 2,197 | 52.3 | 4,198 |
| 56,320 | 52.7 | 50,562 | 47.3 | 106,882 |
| 27,904 | 54.5 | 23,290 | 45.5 | 51,194 |
| 22,198 | 48.1 | 23,911 | 51.9 | 46,109 |
| 501,678 | 54.4 | 420,814 | 45.6 | 922,492 |
| 66,578 | 46.5 | 76,733 | 53.5 | 143,311 |
| 2,815 | 38.9 | 4,428 | 61.1 | 7,243 |
| 269,567 | 49.2 | 278,409 | 50.8 | 547,976 |
| 241,571 | 53.0 | 213,949 | 47.0 | 455,520 |
| 8,607 | 47.9 | 9,371 | 52.1 | 17,978 |
| 233,103 | 50.0 | 233,360 | 50.0 | 466,463 |
| 526,628 | 52.9 | 468,564 | 47.1 | 995,192 |
| 226,167 | 64.2 | 125,954 | 35.8 | 352,121 |
| 79,088 | 46.1 | 92,351 | 53.9 | 171,439 |
| 53,242 | 49.6 | 54,027 | 50.4 | 107,269 |
| 168,679 | 63.0 | 99,136 | 37.0 | 267,815 |
| 75,274 | 55.1 | 61,217 | 44.9 | 136,491 |
| 339,866 | 59.8 | 228,642 | 40.2 | 568,508 |
| 64,178 | 57.5 | 47,416 | 42.5 | 111,594 |
| 19,397 | 34.9 | 36,227 | 65.1 | 55,624 |
| 506 | 38.5 | 808 | 61.5 | 1,314 |
| 5,772 | 39.3 | 8,930 | 60.7 | 14,702 |
| 70,174 | 52.9 | 62,506 | 47.1 | 132,680 |
| 108,472 | 56.0 | 85,220 | 44.0 | 193,692 |
| 58,375 | 42.9 | 77,724 | 57.1 | 136,099 |
| 10,501 | 42.6 | 14,166 | 57.4 | 24,667 |
| 5,435 | 32.6 | 11,253 | 67.4 | 16,688 |
| 1,746 | 38.1 | 2,838 | 61.9 | 4,584 |
| 33,005 | 39.9 | 49,765 | 60.1 | 82,770 |
| 7,783 | 40.8 | 11,271 | 59.2 | 19,054 |
| 137,141 | 51.3 | 130,101 | 48.7 | 267,242 |
| 35,071 | 51.9 | 32,551 | 48.1 | 67,622 |
| 6,224 | 39.2 | 9,666 | 60.8 | 15,890 |
Totals | 6,019,422 | 54.2 | 5,093,942 | 45.8 | 11,113,364 | |
---|
By congressional district
Feinstein won 39 of the 53 congressional districts. De Leon won 14, including seven held by Republicans and seven held by Democrats.[126]
External links
Official campaign websites
Notes and References
- News: United States Senate election in California, 2018 - Ballotpedia. December 23, 2017. en-US.
- News: Feinstein's record: 7.3 million votes. November 26, 2012. Politico. Charles Mahtesian. Politico. December 16, 2012.
- News: Essential Politics: State Senate committee moves to assist immigrants, what California's members of Congress are saying about Trump's executive order. Los Angeles Times. July 20, 2017. en-US. 0458-3035.
- News: What will Feinstein do? California Democrats await senator's re-election decision to plot their own futures. Mehta. Seema. January 17, 2017. Los Angeles Times. July 20, 2017. en-US. 0458-3035.
- Web site: LeBlanc . Clare; Foran, Paul . 2023-09-29 . Dianne Feinstein, longest-serving female US senator in history, dies at 90 CNN Politics . 2023-11-07 . CNN . en.
- Web site: McGreevy. Patrick. With his political clock ticking, state Senate leader Kevin de León keeps mum about what he'll do next. Los Angeles Times. September 21, 2017. September 23, 2017.
- Web site: De Leon to Challenge Feinstein in California Senate Race. Bridget. Bowman. October 15, 2017. January 20, 2018. www.RollCall.com.
- Web site: Calif. Dem announces Feinstein challenge. Mallory. Shelbourne. October 15, 2017. The Hill. January 20, 2018.
- Web site: Sen. Dianne Feinstein says she'll run again: 'There's still so much work left to do'. Wire. Sarah D.. October 9, 2017. Los Angeles Times. October 9, 2017.
- Web site: Candidate List . Lavote.net . 2022-04-14.
- Web site: California 2017 General Election. www.thegreenpapers.com.
- Web site: Harris, Eugene Patterson - Candidate overview. FEC.gov.
- News: Gregory . Krieg. 'Justice Democrats' launch new California Senate candidate. CNN.
- Web site: Sommer. Will. Progressive group backs new Feinstein challenger. The Hill. November 2, 2017.
- Web site: David Hildebrand for U.S. Senate 2018. DavidForCalifornia.com. January 20, 2018.
- Web site: Hildebrand, David - Candidate overview . FEC.gov. January 20, 2018.
- Web site: Brennan, Christopher - Candidate overview. FEC.gov.
- Web site: Page by Page Report Display for 201702010200050167 (Page 1 of 4). docquery.FEC.gov.
- Web site: Candidate Details. https://web.archive.org/web/20110421070013/http://fec.gov/disclosurehs/HSCandDetail.do. dead. April 21, 2011. www.FEC.gov.
- News: 2018 California Senate race expected to get more crowded. Gregory . Krieg. CNN. October 14, 2017.
- Web site: New primary challenger to Feinstein emerges. Politico. September 7, 2017 .
- Web site: California politics news feed. November 2017 . January 20, 2018. Los Angeles Times.
- Web site: California Billionaire Will Not Run in 2018 Elections. NBCConnecticut.com. January 8, 2018 . January 20, 2018.
- Web site: Liberal online news host Cenk Uygur considering Senate run in California. October 19, 2017.
- Web site: 2016 California General Election Official Voter Information Guide . March 24, 2018 . https://web.archive.org/web/20160918201713/http://voterguide.sos.ca.gov/pdf/complete-vig.pdf . September 18, 2016 . dead . mdy-all .
- Web site: Contest/Candidate Proof List, Qualified and on Ballot, Statewide Primary Election 5-June-2018: Voter Nominated Offices United States Senator. 14. Website of the Secretary of State - California. sos.ca.gov.
- Web site: Registrar of Voters 2018 Statewide Direct Primary Election . County of San Diego . March 10, 2018 . March 11, 2018 . https://web.archive.org/web/20180311140844/http://www.sdvote.com/content/dam/rov/en/election/2018June/Candidate_List.pdf . dead .
- Web site: Patrick Little, neo-Nazi Senate candidate, banned from state GOP convention. May 6, 2018. San Francisco Chronicle.
- Web site: Taylor, Paul Allen MR - Candidate overview . FEC.gov.
- Web site: Search results. FEC.gov.
- Web site: Coson, Gary Lynn - Candidate overview. FEC.gov.
- johnestrada. 961741092356960257. Join the 49er club! John Estrada U. S. Senate 2018 California Republican P. O. Box 6631 Fresno, California 93703 http://www.gopradio.us $49 help defeat Dianne Feinstein.. John. Estrada. February 8, 2018.
- Web site: Tim Kalemkarian S18 Committee - committee overview. FEC.gov.
- Web site: Wildermuth. John. It's been 30-plus years: Time to run for Congress again?. San Francisco Chronicle. August 23, 2019. August 22, 2019. https://web.archive.org/web/20190822212021/https://www.sfchronicle.com/politics/article/It-s-been-30-plus-years-Time-to-run-for-14371053.php. August 22, 2019. live.
- Web site: Search results. FEC.gov.
- Web site: Saavedra, Jazmina - Candidate overview. FEC.gov. January 20, 2018.
- Web site: Schrader, Stephen James - Candidate overview. FEC.gov.
- Web site: Kevin Faulconer, San Diego mayor, quietly mulling run for governor. Politico. January 20, 2018. November 7, 2017. https://web.archive.org/web/20171107012342/https://www.politico.com/states/california/story/2017/01/kevin-faulconer-san-diego-mayor-quietly-mulls-run-for-governor-108468. dead.
- Web site: How California lawmakers have tried and failed to fix the state's housing crisis. June 30, 2017 . January 20, 2018. Los Angeles Times.
- News: Caitlyn Jenner weighs run for Senate. Manchester, Julia. The Hill. July 16, 2017. July 16, 2017.
- Web site: Washington. Arlene. Arnold Schwarzenegger shoots down US Senate run. March 12, 2017. AOL. March 13, 2017.
- News: Republican Ashley Swearengin says she won't run for governor or U.S. Senate in 2018. Mehta, Seema. Los Angeles Times. November 2, 2017.
- Web site: Laguna Beach Local News Laguna Local to Make a Bid for the Senate . Laguna Beach Local News . January 18, 2018 . April 4, 2018.
- Web site: Certified List of Write-In Candidates for the June 5, 2018, Statewide Direct Primary Election . State of California Secretary of State . May 25, 2018.
- Web site: Search results . FEC.gov.
- Web site: Candidates for Public Office . Constitutionpartyofcalifornia.org . 2018-04-04 . https://web.archive.org/web/20180328164628/http://www.constitutionpartyofcalifornia.org/candidates.html . March 28, 2018 . dead . mdy-all .
- Web site: Socialist Equality Party announces California candidates in midterm elections . Wsws.org . April 3, 2018 . April 4, 2018.
- Web site: Olson, Lee W - Candidate overview . FEC.gov.
- Web site: Shi, Ling Ling - Candidate overview. FEC.gov.
- Web site: Carroll, Jerry Leon - Candidate overview. FEC.gov.
- Web site: Michael DR. fec.gov.
- Web site: Hodge, Charles Junior - Candidate overview. FEC.gov.
- Web site: Mead, Richard Thomas - Candidate overview. FEC.gov.
- Web site: Roberts, Clifton - Candidate overview. FEC.gov.
- Web site: Vegan in the Region: The Humane Party. Bob. Kasarda. nwitimes.com. October 23, 2016 .
- Web site: Campaign finance data. April 23, 2018.
- https://escholarship.org/uc/item/4x28272w UC Berkeley
- Paul Taylor (R) 4%, Other Republicans 9%, Other Democrats 6%, All other candidates 2%, Undecided 25%
- https://www.emerson.edu/sites/default/files/Files/Academics/ecp-ca-5-24-pr.pdf Emerson College
- Other 6%, Undecided 32%
- https://web.archive.org/web/20180601201230/https://files-west-stanford-edu.s3-us-west-2.amazonaws.com/s3fs-public/billlanecenter-yougov-ca_primary_toplines_20180524.pdf YouGov
- Paul Taylor (R) with 2%; Adrienne Nicole Edwards (D), David Hildebrand (D), Herbert Peters (D), Douglas Howard Pierce (D), Arun Bhumitra (R), Jack Crew (R), Kevin Mottus (R), Mario Nabliba (R), Tom Palzer (R), Derrick Michael Reid (L), Ling Ling Shi (NPP), none of the above with 1%; all other candidates 0%; Undecided with 23%
- http://www.surveyusa.com/client/PollReport.aspx?g=01a8ace0-88c1-4bdd-975a-4011f405804a SurveyUSA
- Arun Bhumitra (R) 4%; Jack Crew (R) 3%; Adrienne Nicole Edwards (D), Don J. Grundmann (C), Kevin Mottus (R), Tom Palzer (R), Douglas Howard Pierce (D), Derrick Michael Reid (L), and Paul Taylor (R) with 1%; Colleen Shea Fernald (NPP), Rash Ghosh (NPP), Tim Gildersleeve (NPP), Michael Fahmy Girgis (NPP), Jason Hanania (NPP), David Hildebrand (D), Jerry Laws (R), David Moore (SEP), Mario Nabliba (R), Lee W. Olson (NPP), John Thompson Parker (PFP), Herbert Peters (D), Gerald Plummer (D), Ling Ling Shi (NPP), Donnie Turner (D) with 0%; Undecided with 21%
- http://www.ppic.org/wp-content/uploads/s-518mbs.pdf Public Policy Institute of California
- Other with 5%, Undecided with 36%
- https://drive.google.com/file/d/1rQdeV7sf9XI-0xMDg58Qg0igsZRVGWW3/view USC Dornsife/Los Angeles Times
- Herbert Peters (D), Douglas Howard Pierce (D), Donnie Turner (D), Derrick Michael Reid (L), John Thompson Parker (PFP), Arun Bhumitra (R), Jerry Laws (R), Mario Nabliba (R), Paul Taylor (R), and David Moore (SEP) with 1%; Adrienne Nicole Edwards (D), David Hildebrand (D), Gerald Plummer (D), Jack Crew (R), Kevin Mottus (R), Tom Palzer (R), Colleen Shea Fernald (NPP), Rash Ghosh (NPP), Tim Gildersleeve (NPP), Michael Fahmy Girgis (NPP), Don J. Grundmann (C), Jason Hanania (NPP), Lee W. Olson (NPP), and Ling Ling Shi (NPP) with 0%; Other 0%; Not voting 0%; Undecided with 41%
- https://web.archive.org/web/20180510051311/https://d2pggiv3o55wnc.cloudfront.net/oann/wp-content/uploads/2018/05/OAN-POLL.pdf Gravis Marketing
- John Melendez* (D) 3%, David Hildebrand (D) 2%, Undecided 16%. *Withdrawn
- http://www.surveyusa.com/client/PollReport.aspx?g=e60651f4-03ad-4a80-9b0d-09bc68bbdc74 SurveyUSA
- John Melendez* (D) 4%, Other 2%, Undecided 17%. *Withdrawn.
- http://www.sacbee.com/news/politics-government/capitol-alert/article209849549.html UC Berkeley
- Other Republicans 8%, Other non-Republicans 6%, Undecided 35%
- http://www.ppic.org/wp-content/uploads/s-318mbs.pdf Public Policy Institute of California
- Other with 2, Undecided with 39%
- http://www.ppic.org/wp-content/uploads/s-118mbs.pdf Public Policy Institute of California
- Other with 3%, Undecided with 33%
- https://escholarship.org/uc/item/3z97f1d8 UC Berkeley
- Other/Undecided with 32%
- http://www.ppic.org/wp-content/uploads/crosstabs_likelyvoters1217.pdf Public Policy Institute of California
- Other with 1%, Undecided with 33%
- http://capweekly.wpengine.netdna-cdn.com/wp-content/uploads/2017/10/Poll-1.pdf Sextant Strategies & Research
- Not voting with 29%, Undecided with 17%
- http://www.surveyusa.com/client/PollReport.aspx?g=114aa760-42a1-4cfa-9eeb-4a064c31c080 SurveyUSA
- Alison Hartson (D) with 3%David Hildebrand (D) 2%; Donald Adams (R), Jerry Leon Carroll (NPP), Pat Harris (D), Richard Mead (NPP), Douglas Howard Pierce (D), Steve Stokes (D), and Michael Ziesing (G, write-in) with 1%; Clifton Roberts (H) 0%; Other with 1%; Undecided with 29%
- http://www.surveyusa.com/client/PollReport.aspx?g=04104c60-a299-4ed4-87a4-f9f25ff81e7d SurveyUSA
- Alison Hartson (D) with 3%; Pat Harris (D), David Hildebrand (D), Clifton Roberts (H), Steve Stokes (D), and Michael Ziesing (G, write-in) with 1%; Donald Adams (R), Jerry Leon Carroll (NPP), Michael Eisen (NPP), Tim Gildersleeve (NPP), Charles Junior Hodge (NPP), Richard Mead (NPP), and Douglas Howard Pierce with 0%; Undecided with 30%
- Stephen Schrader (R) 4%; Pat Harris (D), Alison Hartson (D), John Melendez (D), and Michael Ziesing (G, write-in) with 2%; David Hildebrand (D) and Steve Stokes (D) with 1%; Donald Adams (R), Jery Leon Carroll (NPP), Michael Eisen (NPP), Tim Gildersleeve, Charles Junior Hodge (NPP), Richard Mead (NPP), Douglas Howard Pierce (D), and Clifton Roberts (H) with 0%; Undecided with 30%
- http://capweekly.wpengine.netdna-cdn.com/wp-content/uploads/2017/10/Poll-1.pdf Sextant Strategies & Research
- http://www.publicpolicypolling.com/pdf/2015/CaliforniaPollJanuary2017.pdf Public Policy Polling
- Web site: 2018 Senate Race Ratings. The Cook Political Report. October 11, 2017.
- Web site: 2018 Senate Ratings. The Rothenberg Political Report. October 11, 2017.
- Web site: 2018 Crystal Ball Senate race ratings. Sabato's Crystal Ball. October 11, 2017.
- Web site: Daily Kos Elections 2018 race ratings. Daily Kos. June 5, 2018.
- Web site: 2018 Senate Power Rankings. Fox News. July 10, 2018.
- Highest rating given
- Web site: Key Races: Senate. July 15, 2018.
- Web site: Battle for the Senate 2018. July 15, 2018.
- News: California - 2018 Senate Forecast. Silver. Nate. FiveThirtyEight. October 20, 2018. en-US.
- https://web.archive.org/web/20181105212342/https://twitter.com/ChangePolls/status/1059542027933691904 Change Research
- https://researchco.ca/wp-content/uploads/2018/11/Tables_Midterms_04Nov2018.pdf Research Co.
- http://www.surveyusa.com/client/PollReport.aspx?g=fd127dca-7216-469a-bac4-573c5e33b81c SurveyUSA
- https://www.probolskyresearch.com/2018/10/31/feinstein-leads-u-s-senate-race-in-california-de-leon-shows-strength/ Probolsky Research
- https://escholarship.org/uc/item/3949w8v3 UC Berkeley
- https://files-west-stanford-edu.s3-us-west-2.amazonaws.com/s3fs-public/billlanecenter-stanford-yougov-ca_general_toplines_20181024.pdf YouGov
- http://www.ppic.org/wp-content/uploads/ppic-statewide-survey-october-2018.pdf Public Policy Institute of California
- https://www.emerson.edu/news-events/emerson-college-today/emerson-e-poll-incumbents-feinstein-newsom-favored-win-senate-gov-races-ca-over-60-disapprove-trump Emerson College
- http://www.surveyusa.com/client/PollReport.aspx?g=85614f00-b105-4f49-a6e5-630e246d8d52 SurveyUSA
- https://drive.google.com/file/d/13E1_zDiuujJ3A4_QD-DSvnxazr0EQiH7/view USC Dornsife/Los Angeles Times
- https://www.prnewswire.com/news-releases/feinstein-enjoys-double-digit-lead-in-us-senate-race-300731920.html 1st Tuesday Campaigns
- https://web.archive.org/web/20180920234655/https://poppolling.com/wp-content/uploads/2018/09/CA-Statewide-Survey-Toplines-Sept.-2018.pdf Vox Populi Polling
- http://www.ppic.org/wp-content/uploads/ppic-statewide-survey-september-2018.pdf Public Policy Institute of California
- https://www.ipsos.com/en-us/news-polls/election-data-CA-FL-TX-NV-AZ Ipsos
- https://www.probolskyresearch.com/2018/09/06/newsom-leads-cox-for-governor-but-not-by-large-margin-feinstein-over-de-leon/ Probolsky Research (R)
- http://www.ppic.org/wp-content/uploads/ppic-statewide-survey-july-2018.pdf Public Policy Institute of California
- http://www.surveyusa.com/client/PollReport.aspx?g=5c3abf41-032d-4193-a22c-ff7533569df9 SurveyUSA
- https://drive.google.com/file/d/1xM21hJAl4kbpsDCMblidfXkfrQYM6jYu/view USC Dornsife/Los Angeles Times
- http://www.probolskyresearch.com/2018/04/24/feinstein-leads-de-leon-in-the-ca-u-s-senate-race-general-election-match-up/ Probolsky Research (R)
- https://drive.google.com/file/d/1YFMtkMeZ6fzDSVY1fPf_B-qMmZs_Qb7R/view USC Dornsife/Los Angeles Times
- http://capweekly.wpengine.netdna-cdn.com/wp-content/uploads/2017/10/Poll-1.pdf Sextant Strategies & Research
- http://capweekly.wpengine.netdna-cdn.com/wp-content/uploads/2017/10/Poll-1.pdf Sextant Strategies & Research
- Web site: Supplement to the Statement of Vote - Counties by Congressional Districts for United States Senator . State of California Secretary of State.
- Web site: Supplement to the Statement of Vote - Counties by Congressional Districts for Governor . State of California Secretary of State.
- Web site: Governor - Statewide Results PDF . California Secretary of State . January 7, 2019.
- Web site: Daily Kos Elections' presidential results by congressional district for 2020, 2016, and 2012. Daily Kos.