2018 United States Senate election in Indiana explained

Election Name:	2018 United States Senate election in Indiana
Country:	Indiana
Type:	presidential
Ongoing:	no
Previous Election:	2012 United States Senate election in Indiana
Previous Year:	2012
Next Election:	2024 United States Senate election in Indiana
Next Year:	2024
Turnout:	50.42%
Image1:	Mike Braun, Official Portrait, 116th Congress.jpg
Nominee1:	Mike Braun
Party1:	Republican Party (United States)
Popular Vote1:	1,158,000
Percentage1:	50.73%
Nominee2:	Joe Donnelly
Party2:	Democratic Party (United States)
Popular Vote2:	1,023,553
Percentage2:	44.84%
U.S. Senator
Before Election:	Joe Donnelly
Before Party:	Democratic Party (United States)
After Election:	Mike Braun
After Party:	Republican Party (United States)

The 2018 United States Senate election in Indiana took place on November 6, 2018, along with other elections to the United States Senate and House of Representatives and various state and local elections. Incumbent Democratic Senator Joe Donnelly lost re-election to a second term to Republican Mike Braun by a 6% margin. This was the second consecutive election for this seat in which the incumbent was defeated and/or the seat flipped parties.

This was one of ten Democratic-held Senate seats up for election in a state won by Donald Trump in the 2016 presidential election. In 2017, Politico described the race as "possibly the GOP's best opportunity to seize a Senate seat from Democrats" in the 2018 elections.^[1] The primary election was held on May 8, 2018.^[2] In October 2018, RealClearPolitics rated the race a toss-up between the Democratic and Republican nominees, with the Libertarian receiving a poll average of 6%.^[3]

Background

In 2012, Joe Donnelly was elected to the Senate with 50% of the vote to Republican nominee Richard Mourdock's 44%. In the 2016 presidential election, Republican nominee Donald Trump won Indiana with about 56.5% of the vote to Democratic nominee Hillary Clinton's 37.5%.^{[4] [5]}

Democratic primary

Candidates

Nominee

• Joe Donnelly, incumbent U.S. senator^[6]

Withdrew

• Martin Del Rio, Iraq War veteran^{[7] [8]}

Results

Republican primary

Candidates

Nominee

• Mike Braun, businessman and former state representative^{[9] [10]}

Eliminated in the primary election

• Luke Messer, U.S. representative^[11]
• Todd Rokita, U.S. representative^{[12] [13]}

Declined

• Jim Banks, U.S. representative^[14]
• Susan Brooks, U.S. representative (endorsed Luke Messer)^{[15] [16]}
• Mike Delph, state senator (endorsed Todd Rokita)^[17]
• Jackie Walorski, U.S. representative^{[18] [19] [20]}

Withdrawn

• Terry Henderson, businessman^{[21] [22]} (endorsed Mike Braun)^[23]
• Andy Horning, Libertarian nominee for the U.S. Senate in 2012 and Libertarian nominee for IN-08 in 2014^{[24] [25]}
• Mark Hurt, attorney and former congressional aide^{[26] [27] [28] [29]}
• Andrew Takami, director of Purdue Polytechnic New Albany^{[30] [31]} (endorsed Luke Messer)^[32]

Polling

Poll source	Date(s) administered	Sample size	Margin of error	Luke Messer	Todd Rokita	Mike Braun	Other	Undecided
Strategic National (R)^[33]	May 5–6, 2018	300	± 5.7%	29%	28%	align=center	44%	–	–
Gravis Marketing^[34]	April 6–11, 2018	280	± 5.9%	13%	16%	align=center	26%	–	align=center	45%
GS Strategy Group (R-Rokita)^[35]	January 6–9, 2018	500	± 4.4%	9%	align=center	24%	9%	–	align=center	58%
GS Strategy Group (R-Rokita)^[36]	July 16–18, 2017	500	± 4.4%	20%	align=center	28%	–	–	align=center	51%
				14%	align=center	21%	11%	–	align=center	55%
OnMedia (R-Messer)^[37]	July 10–12, 2017	400	± 4.8%	23%	23%	2%	7%	align=center	45%

Results

Independent

Candidates

Declared

• James Johnson Jr.^[38]

General election

Candidates

• Mike Braun, businessman and former state representative (R)
• Lucy Brenton (L)
• Joe Donnelly, incumbent (D)
• James Johnson Jr. (I)

Debates

• Complete video of debate, October 8, 2018

Predictions

Source	Ranking	As of
The Cook Political Report^[39]		October 26, 2018
Inside Elections^[40]		November 1, 2018
Sabato's Crystal Ball^[41]		November 5, 2018
CNN^[42]		November 5, 2018
RealClearPolitics^[43]		November 5, 2018
Daily Kos^[44]		November 5, 2018
Fox News^[45]		November 5, 2018
FiveThirtyEight^[46]		November 5, 2018

Fundraising

Campaign finance reports as of October 17, 2018
Candidate (party)	Total receipts	Total disbursements	Cash on hand
	Joe Donnelly (D)	$16,100,528	$13,872,981	$2,321,981
	Mike Braun (R)	$16,964,706	$15,576,842	$1,387,861
Source: Federal Election Commission^[47]

Polling

Graphical summary

Poll source	Date(s) administered	Sample size	Margin of error	Joe Donnelly (D)	Mike Braun (R)	Lucy Brenton (L)	Other	Undecided
HarrisX^[48]	November 3–5, 2018	600	± 4.0%	42%	align=center	43%	–	–	–
HarrisX^[49]	November 2–4, 2018	600	± 4.0%	align=center	43%	41%	–	–	–
HarrisX^[50]	November 1–3, 2018	600	± 4.0%	align=center	43%	42%	–	–	–
HarrisX^[51]	October 31 – November 2, 2018	600	± 4.0%	align=center	44%	42%	–	–	–
HarrisX^[52]	October 30 – November 1, 2018	600	± 4.0%	43%	43%	–	–	–
HarrisX^[53]	October 29–31, 2018	600	± 4.0%	40%	align=center	43%	–	–	–
Fox News^[54]	October 27–30, 2018	722 LV	± 3.5%	align=center	45%	38%	5%	2%	9%
		852 RV	± 3.0%	align=center	42%	38%	6%	2%	11%
HarrisX^[55]	October 24–30, 2018	1,400	± 2.6%	42%	42%	–	–	–
NBC News/Marist^[56]	October 24–28, 2018	496 LV	± 5.5%	align=center	45%	42%	7%	<1%	5%
				align=center	48%	46%	–	2%	5%
		800 RV	± 4.2%	align=center	43%	40%	9%	<1%	7%
				align=center	47%	45%	–	2%	7%
Cygnal (R)^[57]	October 26–27, 2018	505	± 4.4%	46%	align=center	49%	–	3%	2%
YouGov^[58]	October 23–26, 2018	975	± 3.7%	43%	align=center	46%	3%	0%	8%
Mason Strategies (R)^[59]	October 15–20, 2018	600	± 3.9%	43%	align=center	47%	3%	–	7%
American Viewpoint (R-Braun)^[60]	October 14–17, 2018	800	–	40%	align=center	44%	7%	–	5%
SurveyUSA^[61]	October 12–16, 2018	816	± 4.6%	align=center	41%	40%	8%	–	11%
Gravis Marketing^[62]	October 12–16, 2018	377	± 5.1%	align=center	44%	40%	7%	–	10%
Vox Populi Polling^[63]	October 13–15, 2018	783	± 3.5%	align=center	55%	45%	–	–	–
American Viewpoint (R-Braun)	October 7–10, 2018	800	–	40%	align=center	44%	7%	–	7%
American Viewpoint (R-Braun)	September 30 – October 3, 2018	800	–	39%	align=center	43%	7%	–	5%
Fox News^[64]	September 29 – October 2, 2018	695 LV	± 3.5%	align=center	43%	41%	6%	2%	9%
		806 RV	± 3.5%	align=center	41%	40%	6%	1%	10%
Ipsos^[65]	September 12–20, 2018	1,181	± 3.0%	align=center	46%	43%	–	3%	8%
Fox News^[66]	September 8–11, 2018	677 LV	± 3.5%	43%	align=center	45%	3%	1%	8%
		804 RV	± 3.5%	align=center	42%	41%	4%	1%	10%
NBC News/Marist^[67]	August 26–29, 2018	576 LV	± 5.0%	align=center	44%	41%	8%	1%	6%
				align=center	49%	43%	–	2%	7%
		816 RV	± 4.2%	align=center	43%	40%	8%	1%	8%
				align=center	48%	42%	–	2%	9%
Trafalgar Group (R)^[68]	July 31 – August 7, 2018	1,420	± 2.6%	align=center	51%	39%	–	–	11%
SurveyMonkey/Axios^[69]	June 11 – July 2, 2018	952	± 5.0%	47%	align=center	49%	–	–	4%
Gravis Marketing^[70]	May 10–15, 2018	400	± 4.9%	46%	align=center	47%	–	–	7%

with Todd Rokita

with Luke Messer

with generic Republican

Results

On November 6, 2018, Braun won the general election.^[72] He swept southern Indiana, the exurbs of Indianapolis, and most other rural areas in the state. Donnelly ran well behind his 2012 vote totals, winning only in Indianapolis, the university centers (Bloomington, Terre Haute, West Lafayette, South Bend), and the suburbs of Chicago in Northwest Indiana.^[73]

By county

Source^[74]

	Mike Braun Republican		Joe Donnelly Democratic		Lucy Brenton Libertarian		Margin		Total
align=center	County	Votes	%	Votes	%	Votes	%	Votes	%	Votes
Adams	7,511	67.39%	3,146	28.23%	489	4.39%	4,365	39.16%	11,146
Allen	65,927	52.36%	55,903	44.40%	4,080	3.24%	10,024	7.96%	125,910
Bartholomew	15,222	57.41%	10,071	37.98%	1,223	4.61%	5,151	19.43%	26,516
Benton	1,926	64.98%	847	28.58%	191	6.44%	1,079	36.40%	2,964
Blackford	2,303	59.39%	1,275	32.88%	300	7.74%	1,028	26.51%	3,878
Boone	15,540	56.43%	10,981	39.87%	1,019	3.70%	4,559	16.55%	27,540
Brown	4,103	57.07%	2,768	38.50%	318	4.42%	1,335	18.57%	7,189
Carroll	4,518	65.35%	2,071	29.95%	325	4.70%	2,447	35.39%	6,914
Cass	6,617	57.79%	4,061	35.47%	772	6.74%	2,556	22.32%	11,450
Clark	22,766	52.60%	18,551	42.86%	1,967	4.54%	4,215	9.74%	43,284
Clay	6,207	66.91%	2,601	28.04%	469	5.06%	3,606	38.87%	9,277
Clinton	5,967	64.81%	2,755	29.92%	485	5.27%	3,212	34.89%	9,207
Crawford	2,252	56.83%	1,504	37.95%	207	5.22%	748	18.87%	3,963
Daviess	6,555	75.01%	1,901	21.75%	283	3.24%	4,654	53.26%	8,739
Dearborn	13,287	72.79%	4,481	24.55%	487	2.67%	8,806	48.24%	18,255
Decatur	6,246	69.35%	2,287	25.39%	473	5.25%	3,959	43.96%	9,006
DeKalb	9,167	65.80%	4,204	30.18%	561	4.03%	4,963	35.62%	13,932
Delaware	17,447	46.27%	18,159	48.16%	2,099	5.57%	-712	-1.89%	37,705
Dubois	11,204	65.42%	5,264	30.74%	658	3.84%	5,940	34.68%	17,126
Elkhart	31,164	57.83%	21,062	39.09%	1,661	3.08%	10,102	18.75%	53,887
Fayette	4,704	63.02%	2,295	30.75%	465	6.23%	2,409	32.27%	7,464
Floyd	16,588	52.12%	14,070	44.21%	1,167	3.67%	2,518	7.91%	31,825
Fountain	4,060	69.18%	1,496	25.49%	313	5.33%	2,564	43.69%	5,869
Franklin	5,614	75.54%	1,619	21.78%	199	2.68%	3,995	53.75%	7,432
Fulton	4,154	59.28%	2,539	36.23%	315	4.49%	1,615	23.05%	7,008
Gibson	8,040	64.26%	4,001	31.98%	471	3.76%	4,039	32.28%	12,512
Grant	12,393	61.76%	6,745	33.61%	929	4.63%	5,648	28.15%	20,067
Greene	6,949	64.50%	3,313	30.75%	511	4.74%	3,636	33.75%	10,773
Hamilton	72,325	52.38%	61,337	44.42%	4,410	3.19%	10,988	7.96%	138,072
Hancock	19,097	63.10%	9,770	32.28%	1,399	4.62%	9,327	30.82%	30,266
Harrison	9,847	63.05%	5,131	32.86%	639	4.09%	4,716	30.20%	15,617
Hendricks	36,966	58.85%	23,599	37.57%	2,247	3.58%	13,367	21.28%	62,812
Henry	9,569	60.98%	5,171	32.95%	953	6.07%	4,398	28.03%	15,693
Howard	16,736	57.18%	11,159	38.12%	1,376	4.70%	5,577	19.05%	29,271
Huntington	8,879	67.22%	3,699	28.00%	631	4.78%	5,180	39.22%	13,209
Jackson	9,431	65.43%	4,198	29.12%	785	5.45%	5,233	36.30%	14,414
Jasper	6,987	66.00%	3,278	30.97%	321	3.03%	3,709	35.04%	10,586
Jay	3,990	63.42%	1,933	30.73%	368	5.85%	2,057	32.70%	6,291
Jefferson	6,345	56.44%	4,313	38.37%	584	5.19%	2,032	18.08%	11,242
Jennings	5,921	64.72%	2,686	29.36%	542	5.92%	3,235	35.36%	9,149
Johnson	32,540	62.70%	17,479	33.68%	1,883	3.63%	15,061	29.02%	51,902
Knox	7,876	62.38%	3,977	31.50%	772	6.11%	3,899	30.88%	12,625
Kosciusko	18,558	70.34%	6,801	25.78%	1,022	3.87%	11,757	44.57%	26,381
LaGrange	5,183	67.49%	2,217	28.87%	280	3.65%	2,966	38.62%	7,680
Lake	54,564	33.62%	104,390	64.32%	3,340	2.06%	-49,826	-30.70%	162,294
LaPorte	16,008	42.98%	20,014	53.73%	1,225	3.29%	-4,006	-10.76%	37,247
Lawrence	10,274	66.30%	4,434	28.61%	788	5.09%	5,840	37.69%	15,496
Madison	22,841	51.83%	18,701	42.44%	2,526	5.73%	4,140	9.39%	44,068
Marion	98,385	32.04%	197,880	64.43%	10,840	3.53%	-99,495	-32.40%	307,105
Marshall	8,747	58.71%	5,619	37.71%	533	3.58%	3,128	20.99%	14,899
Martin	2,997	69.31%	1,127	26.06%	200	4.63%	1,870	43.25%	4,324
Miami	6,975	67.30%	2,862	27.61%	527	5.08%	4,113	39.69%	10,364
Monroe	15,540	29.94%	34,193	65.87%	2,174	4.19%	-18,653	-35.94%	51,907
Montgomery	8,362	66.69%	3,518	28.06%	659	5.26%	4,844	38.63%	12,539
Morgan	17,539	69.72%	6,471	25.72%	1,148	4.56%	11,068	43.99%	25,158
Newton	2,966	65.00%	1,402	30.73%	195	4.27%	1,564	34.28%	4,563
Noble	8,993	65.70%	4,132	30.18%	564	4.12%	4,861	35.51%	13,689
Ohio	1,586	66.22%	747	31.19%	62	2.59%	839	35.03%	2,395
Orange	4,353	64.28%	2,135	31.53%	284	4.19%	2,218	32.75%	6,772
Owen	4,601	63.96%	2,210	30.72%	383	5.32%	2,391	33.24%	7,194
Parke	3,532	66.12%	1,499	28.06%	311	5.82%	2,033	38.06%	5,342
Perry	3,450	48.25%	3,364	47.04%	337	4.71%	86	1.20%	7,151
Pike	3,235	62.71%	1,679	32.55%	245	4.75%	1,556	30.16%	5,159
Porter	29,368	45.32%	33,390	51.53%	2,037	3.14%	-4,022	-6.21%	64,795
Posey	6,324	59.44%	3,881	36.48%	435	4.09%	2,443	22.96%	10,640
Pulaski	2,583	59.26%	1,617	37.10%	159	3.65%	966	22.16%	4,359
Putnam	7,814	65.67%	3,512	29.52%	573	4.82%	4,302	36.15%	11,899
Randolph	5,138	63.35%	2,467	30.42%	505	6.23%	2,671	32.93%	8,110
Ripley	6,880	72.66%	2,350	24.82%	239	2.52%	4,530	47.84%	9,469
Rush	3,991	65.61%	1,690	27.78%	402	6.61%	2,301	37.83%	6,083
St. Joseph	36,456	39.08%	53,758	57.63%	3,073	3.29%	-17,302	-18.55%	93,287
Scott	4,241	55.34%	3,113	40.62%	309	4.03%	1,128	14.72%	7,663
Shelby	9,340	64.78%	4,333	30.05%	745	5.17%	5,007	34.73%	14,418
Spencer	5,202	58.61%	3,218	36.26%	455	5.13%	1,984	22.35%	8,875
Starke	4,149	54.71%	3,119	41.13%	316	4.17%	1,030	13.58%	7,584
Steuben	7,839	64.39%	3,864	31.74%	472	3.88%	3,975	32.65%	12,175
Sullivan	4,340	58.66%	2,663	36.00%	395	5.34%	1,677	22.67%	7,398
Switzerland	1,874	64.07%	936	32.00%	115	3.93%	938	32.07%	2,925
Tippecanoe	22,649	44.02%	26,376	51.26%	2,431	4.72%	-3,727	-7.24%	51,456
Tipton	4,062	66.30%	1,734	28.30%	331	5.40%	2,328	38.00%	6,127
Union	1,749	69.85%	682	27.24%	73	2.92%	1,067	42.61%	2,504
Vanderburgh	29,375	50.20%	27,183	46.45%	1,962	3.35%	2,192	3.75%	58,520
Vermillion	3,002	53.68%	2,198	39.31%	392	7.01%	804	14.38%	5,592
Vigo	14,813	46.79%	15,171	47.92%	1,674	5.29%	-358	-1.13%	31,658
Wabash	7,658	67.78%	3,159	27.96%	482	4.27%	4,499	39.82%	11,299
Warren	2,208	67.34%	914	27.87%	157	4.79%	1,294	39.46%	3,279
Warrick	14,010	57.50%	9,594	39.37%	762	3.13%	4,416	18.12%	24,366
Washington	6,127	65.31%	2,806	29.91%	448	4.78%	3,321	35.40%	9,381
Wayne	11,241	56.88%	7,482	37.86%	1,039	5.26%	3,759	19.02%	19,762
Wells	7,819	71.79%	2,694	24.73%	379	3.48%	5,125	47.05%	10,892
White	5,100	60.05%	2,739	32.25%	654	7.70%	2,361	27.80%	8,493
Whitley	9,019	67.39%	3,818	28.53%	547	4.09%	5,201	38.86%	13,384

Counties that flipped from Democratic to Republican

• Madison (largest city: Anderson)
• Spencer (largest city: Santa Claus)
• Starke (largest city: Knox)
• Vanderburgh (largest city: Evansville)
• Scott (largest city: Scottsburg)
• Blackford (largest city: Hartford City)
• Clark (largest city: Jeffersonville)
• Crawford (largest city: Marengo)
• Floyd (largest city: New Albany)
• Jefferson (largest city: Madison)
• Fayette (largest city: Connersville)
• Henry (largest city: New Castle)
• Howard (largest city: Kokomo)
• Wayne (largest city: Richmond)
• Vermillion (largest city: Clinton)
• Perry (largest city: Tell City)
• Sullivan (largest city: Sullivan)

By congressional district

Braun won six of nine congressional districts, with Donnelly winning the other three, including one held by a Republican.

District	Braun	Donnelly	Elected representative
		37.9%	60.6%		Pete Visclosky
		51.0%	45.5%		Jackie Walorski
		59.6%	36.7%		Jim Banks
		57.9%	37.4%		Jim Baird
		47.9%	48.4%		Susan Brooks
		60.8%	34.3%		Greg Pence
		31.8%	64.5%		André Carson
		57.3%	38.4%		Larry Bucshon
		54.3%	41.5%		Trey Hollingsworth

Voter demographics

Donnelly!

Braun	No Answer	% of voters
Gender
Men	40	57	3	49
Women	49	46	5	51
Age
18–29 years old	48	45	7	13
30–44 years old	49	43	8	20
45–64 years old	44	54	3	39
65 and older	41	57	1	28
Race
White	40	56	4	86
Black	88	11	1	8
Latino	71	22	6	3
Asian	N/A	N/A	N/A	1
Other	N/A	N/A	N/A	2
Race by gender
White men	35	62	3	42
White women	44	51	5	44
Black men	82	15	2	4
Black women	95	5	0	4
Latino men	N/A	N/A	N/A	1
Latina women	N/A	N/A	N/A	2
Others	N/A	N/A	N/A	2
Education
High school or less	40	56	4	23
Some college education	40	54	6	26
Associate degree	41	55	4	13
Bachelor's degree	46	51	3	22
Advanced degree	61	36	2	16
Education and race
White college graduates	49	48	3	34
White no college degree	33	62	5	53
Non-white college graduates	80	19	2	4
Non-white no college degree	76	20	4	10
Whites by education and gender
White women with college degrees	57	39	4	17
White women without college degrees	36	59	6	27
White men with college degrees	41	57	2	17
White men without college degrees	31	65	4	26
Non-whites	77	20	3	14
Income
Under $30,000	49	44	8	15
$30,000–49,999	46	49	4	23
$50,000–99,999	44	55	2	35
$100,000–199,999	44	52	4	22
Over $200,000	N/A	N/A	N/A	5
Party ID
Democrats	92	6	2	29
Republicans	8	90	2	39
Independents	47	44	9	31
Party by gender
Democratic men	92	6	2	12
Democratic women	93	5	2	18
Republican men	8	91	1	19
Republican women	8	90	2	20
Independent men	42	52	7	18
Independent women	55	33	12	13
Ideology
Liberals	86	8	6	20
Moderates	59	37	5	40
Conservatives	10	88	2	40
Marital status
Married	43	54	3	61
Unmarried	51	46	3	39
Gender by marital status
Married men	38	60	2	31
Married women	48	49	3	30
Unmarried men	42	53	5	19
Unmarried women	61	39	1	20
First-time midterm election voter
Yes	41	53	6	15
No	46	51	3	85
Most important issue facing the country
Health care	70	26	4	41
Immigration	10	85	5	27
Economy	31	66	3	21
Gun policy	66	31	3	8
Area type
Urban	63	33	4	31
Suburban	44	53	3	44
Rural	37	58	5	25
Source: CNN^[75]

External links

• Candidates at Vote Smart
• Candidates at Ballotpedia
• Campaign finance at FEC
• Campaign finance at OpenSecrets
• GOP Primary Debate, February 20, 2018

Official campaign websites

• Mike Braun (R) for Senate
• Lucy Brenton (L) for Senate
• Joe Donnelly (D) for Senate

Notes and References

1. News: Missouri's $10M man. Strauss. Daniel. August 14, 2017. Politico. https://web.archive.org/web/20180509051429/https://www.politico.com/tipsheets/morning-score/2017/08/14/missouris-10-million-man-221850. May 9, 2018. live. December 23, 2017.
2. Web site: United States Senate election in Indiana, 2018. Ballotpedia. December 23, 2017. en-US.
3. Web site: RealClearPolitics - Election 2018 - Indiana Senate - Braun vs. Donnelly vs. Brenton . realclearpolitics.com . 24 October 2018. https://web.archive.org/web/20181004003237/https://www.realclearpolitics.com/epolls/2018/senate/in/indiana_senate_braun_vs_donnelly_vs_brenton-6671.html. October 4, 2018. live.
4. News: Indiana Election Results 2016. August 1, 2017. The New York Times.
5. Web site: Secretary of State : Election Division: Election Results. in.gov.
6. News: Hanscom to Manage Sen. Donnelly Reelect. WTCA. Bottorff. Kathy. January 7, 2017. January 21, 2017.
7. Web site: VOTE MARTIN DEL RIO - committee overview - FEC.gov. FEC.gov. en. 2017-10-25.
8. Web site: Democrat ends US Senate bid - Political notebook - Journal Gazette. journalgazette.net. January 3, 2018 .
9. News: Braun set for U.S. Senate run. Washington Times-Herald. Grant. Mike. August 2, 2017. August 8, 2017.
10. Web site: Businessman Makes Indiana Senate Primary Three-Person Race. Simone. Pathé. 6 November 2017. www.rollcall.com.
11. News: Pathé. Simone. Indiana Rep. Luke Messer Running for Senate. 26 July 2017. Roll Call. 26 July 2017.
12. News: In light of @SusanWBrooks passing on #insen. Twitter. Railey. Kimberly. January 31, 2017. February 3, 2017.
13. News: The Latest: Rokita to Formally Announce Indiana Senate Bid. Associated Press. The New York Times. August 8, 2017. August 8, 2017.
14. News: Indiana Headed for Another Member-on-Member Senate Primary. Roll Call. Pathe. Simone. March 23, 2017. March 24, 2017.
15. Web site: Brooks won't challenge Donnelly for U.S. Senate seat. The Indianapolis Star. Groppe. Maureen. January 31, 2017. January 31, 2017.
16. Web site: Rep. Brooks endorses Messer for Senate - Political notebook - Journal Gazette. journalgazette.net. September 20, 2017 .
17. Web site: Rokita announces with Delph support. Howey Politics. Howey. Brian A.. August 10, 2017. August 10, 2017. August 11, 2017. https://web.archive.org/web/20170811010204/http://howeypolitics.com/Files/HPI170810-3adb9afc41a34924a98faea2913862cc.pdf. dead.
18. News: Here's how big Walorski's win was. South Bend Tribune. Colwell. Jack. November 27, 2016. November 28, 2016.
19. News: Republican Gender Gap Could Grow in the House. Roll Call. Pathé. Simone. November 28, 2016. November 28, 2016.
20. Web site: Hudson. Melissa. Jackie Walorski files for re-election. ABC 57 News. 7 February 2018.
21. News: Republicans jockey to take on Donnelly in 2018. Colombo. Hayleigh. April 8, 2017. Indianapolis Business Journal. April 11, 2017.
22. News: Henderson quits U.S. Senate race. Francisco. Brian. November 13, 2017. The Journal Gazette. November 14, 2017.
23. Web site: MIKE BRAUN EARNS KEY ENDORSEMENT. City-County Observer. February 8, 2018.
24. Web site: Hakim-Shabazz. Abdul. Horning for Senate. IndyPolitics.org. 8 December 2017.
25. Web site: 5 area state legislators facing primary challengers - Local politics - Journal Gazette. journalgazette.net. February 10, 2018. February 10, 2018. https://web.archive.org/web/20180210121007/http://www.journalgazette.net/news/local/local-politics/20180209/5-area-state-legislators-facing-primary-challengers. dead.
26. News: Kokomo lawyer Mark Hurt announces US Senate bid. News and Tribune. Myers. George. February 1, 2017. February 3, 2017.
27. Web site: Kokomo attorney Hurt, citing FedEx troubles and relocating residents, falls short of required signatures for candidacy. George Myers Kokomo. Tribune. February 9, 2018 .
28. Web site: Mark Hurt on Twitter.
29. Web site: Mark Hurt on Twitter.
30. News: Purdue Polytechnic director Andrew.
31. Web site: Andrew Takami on Twitter. Twitter.
32. Web site: Messer Endorsed By Former Senate Candidate Andrew Takami. Luke Messer for Senate. April 9, 2018. April 11, 2018. https://web.archive.org/web/20180412001139/https://www.lukemesser.com/messer-endorsed-by-former-senate-candidate-andrew-takami/. April 12, 2018. dead. mdy-all.
33. http://strategicnational.com/indiana-statewide-gop-primary-poll-results/ Strategic National (R)
34. http://orlando-politics.com/wp-content/uploads/2018/04/GM_Release_IN_04112018-v1.pdf Gravis Marketing
35. https://web.archive.org/web/20180125015401/https://toddrokita.com/wp-content/uploads/2018/01/IN-01-2018-Research-Memo.pdf GS Strategy Group (R-Rokita)
36. https://www.scribd.com/document/354808199/IN-Sen-GS-Strategy-Group-for-Todd-Rokita-July-2017 GS Strategy Group (R-Rokita)
37. http://howeypolitics.com/Files/HPI170720.pdf#page=12 OnMedia (R-Messer)
38. Web site: Candidate list . in.gov . April 6, 2018 . February 11, 2018 . https://web.archive.org/web/20180211072450/https://www.in.gov/sos/elections/files/Candidate_List_Abbreviated_20180126_120509PM.pdf . dead .
39. Web site: 2018 Senate Race Ratings for October 26, 2018. The Cook Political Report. March 13, 2021.
40. Web site: 2018 Senate Ratings. The Rothenberg Political Report. March 13, 2021.
41. Web site: 2018 Crystal Ball Senate race ratings. Sabato's Crystal Ball. October 11, 2017.
42. Web site: Key Races: Senate. July 15, 2018.
43. Web site: Battle for the Senate 2018. July 15, 2018.
44. Web site: Daily Kos Elections 2018 race ratings. Daily Kos. June 5, 2018.
45. Web site: 2018 Senate Power Rankings. . July 10, 2018.
46. Web site: Indiana - 2018 Senate Forecast. Nate. Silver. September 11, 2018.
47. Web site: Campaign finance data. October 31, 2018.
48. https://web.archive.org/web/20181106214819/https://www.alliancenrfpoll.com/ HarrisX
49. https://web.archive.org/web/20181105225346/https://www.alliancenrfpoll.com/ HarrisX
50. https://archive.today/20181105002949/https://www.alliancenrfpoll.com/ HarrisX
51. https://archive.today/20181104183155/https://www.alliancenrfpoll.com/ HarrisX
52. https://archive.today/20181102205016/https://www.alliancenrfpoll.com/ HarrisX
53. https://archive.today/20181101231909/https://www.alliancenrfpoll.com/ HarrisX
54. https://www.foxnews.com/politics/fox-news-indiana-senate-poll-10-31-2018 Fox News
55. https://www.alliancenrfpoll.com/ HarrisX
56. http://maristpoll.marist.edu/wp-content/uploads/2018/10/NBC-News_Marist-Poll_IN-NOS-and-Tables_Adults-and-Registered-Voters-and-Likely-Voters_1810291546.pdf NBC News/Marist
57. http://www.cygn.al/wp-content/uploads/2018/10/42514-Cygnal-IN-Toplines.pdf Cygnal (R)
58. https://d25d2506sfb94s.cloudfront.net/cumulus_uploads/document/9w35f9m36n/cbs_20181028_IN_final.pdf YouGov
59. http://indypolitics.org/braun-has-slight-lead-as-campaign-enters-home-stretch/ Mason Strategies (R)
60. https://drive.google.com/file/d/1zTEKuO4MrPjfxk1-YEIY831cmOnM-svM/view American Viewpoint (R-Braun)
61. http://www.surveyusa.com/client/PollReport.aspx?g=456be67c-296d-4769-8161-3b2ebe487018 SurveyUSA
62. https://www.realclearpolitics.com/docs/Gravis_Indiana_October_16_2018.pdf Gravis Marketing
63. https://web.archive.org/web/20181018161830/https://poppolling.com/wp-content/uploads/2018/10/IN-Statewide-Survey-Topline-Results-October-2018.pdf Vox Populi Polling
64. https://www.foxnews.com/politics/indiana-poll-document-10-3 Fox News
65. https://fingfx.thomsonreuters.com/gfx/rngs/USA-ELECTION/010080D20RG/index.html Ipsos
66. http://www.foxnews.com/politics/interactive/2018/09/12/fox-news-indiana-poll-912.html Fox News
67. http://maristpoll.marist.edu/wp-content/uploads/2018/09/NBC-News_Marist-Poll_Indiana-Tables-of-Adults-and-Registered-Voters-and-Likely-Voters_September-2018_1809051211.pdf NBC News/Marist
68. https://www.scribd.com/document/386273507/IN-Sen-Trafalgar-Group-R-August-2018 Trafalgar Group (R)
69. https://drive.google.com/file/d/1aerd3_1pJ276A7rLNRQ_Y3ifiUtSraan/view SurveyMonkey/Axios
70. https://www.realclearpolitics.com/docs/Indiana_Senate_May_17_2018.pdf Gravis Marketing
71. https://www.axios.com/axios-surveymonkey-big-warning-signs-senate-democrats-09986026-50aa-46df-8094-574cfe5065a3.html/ SurveyMonkey/Axios
72. News: Indiana Election Results . . November 9, 2018.
73. Web site: Lange . Kaitlin . Why Indiana Democrats are flailing and how they might find a road back . Indianapolis Star . 13 November 2018.
74. Web site: 2018 Indiana Senate Election Results. Real Clear Politics. 2018. 21 September 2024.
75. News: Georgia Gubernatorial election exit poll . April 1, 2019 . CNN. en . January 5, 2021 . https://web.archive.org/web/20210105151936/https://www.cnn.com/election/2018/exit-polls/indiana . live .