| Election Name: | 2018 United States Senate election in Connecticut |
| Country: | Connecticut |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2012 United States Senate election in Connecticut |
| Previous Year: | 2012 |
| Next Election: | 2024 United States Senate election in Connecticut |
| Next Year: | 2024 |
| Election Date: | November 6, 2018 |
| Turnout: | 63.58% |
| Image1: | File:Chris Murphy, official portrait, 113th Congress (cropped).jpg |
| Nominee1: | Chris Murphy |
| Party1: | Democratic Party (United States) |
| Alliance1: | Working Families |
| Popular Vote1: | 825,579 |
| Percentage1: | 59.53% |
| Nominee2: | Matthew Corey |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 545,717 |
| Percentage2: | 39.35% |
| U.S. Senator | |
| Before Election: | Chris Murphy |
| Before Party: | Democratic Party (United States) |
| After Election: | Chris Murphy |
| After Party: | Democratic Party (United States) |
The 2018 United States Senate election in Connecticut took place on November 6, 2018, in order to elect a member of the United States Senate to represent the State of Connecticut. Incumbent Democrat Chris Murphy sought and won reelection to a second term.
The primary election was held on August 14, 2018, following a June 12 candidate filing deadline. In the November 6, 2018 general election, incumbent Chris Murphy defeated Republican nominee Matthew Corey with over 59% of the vote.[1] Despite this, Corey was the first Republican since 1926 to win the town of Sprague.
| Source | Ranking | As of | |
|---|---|---|---|
| The Cook Political Report[9] | October 26, 2018 | ||
| Inside Elections[10] | November 1, 2018 | ||
| Sabato's Crystal Ball[11] | November 5, 2018 | ||
| Daily Kos[12] | September 17, 2018 | ||
| Fox News[13] | September 19, 2018 | ||
| CNN[14] | September 16, 2018 | ||
| RealClearPolitics[15] | September 16, 2018 |
| Poll source | Date(s) administered | Sample size | Margin of error | Chris Murphy (D) | Matthew Corey (R) | Other | Undecided | ||
|---|---|---|---|---|---|---|---|---|---|
| Gravis Marketing[16] | October 30 – November 1, 2018 | 681 | ± 3.8% | align=center | 58% | 35% | – | 7% | |
| Emerson College[17] | October 27–29, 2018 | 780 | ± 3.7% | align=center | 55% | 35% | 3% | 7% | |
| Quinnipiac University[18] | October 22–28, 2018 | 1,201 | ± 4.0% | align=center | 56% | 41% | 0% | 3% | |
| Quinnipiac University[19] | October 3–8, 2018 | 767 | ± 5.0% | align=center | 57% | 42% | 0% | 1% | |
| Gravis Marketing[20] | August 24–27, 2018 | 606 | ± 4.0% | align=center | 54% | 37% | − | 8% | |
| Quinnipiac University[21] | August 16–21, 2018 | 1,029 | ± 3.9% | align=center | 59% | 31% | 0% | 8% |
Murphy won all 5 congressional districts.[22]
| District | Murphy | Corey | Representative | ||
|---|---|---|---|---|---|
| 63% | 36% | John B. Larson | |||
| 56% | 42% | Joe Courtney | |||
| 61% | 37% | Rosa DeLauro | |||
| 62% | 37% | Jim Himes | |||
| 55% | 44% | Elizabeth Esty (115th Congress) | |||
| Jahana Hayes (116th Congress) | |||||
Official campaign websites