The 2016 United States Senate election in Indiana was held on November 8, 2016, to elect a member of the United States Senate to represent the State of Indiana. The election was held alongside the presidential election and 2016 Indiana elections.

Republican incumbent Dan Coats, who had served in the Senate since 2011 and previously from 1989 to 1999, ultimately chose to not seek reelection. U.S. Representative Todd Young won the May 3 Republican primary to succeed him, with former U.S. Representative Baron Hill winning the Democratic nomination. However, Hill withdrew from the race on July 11, with former senator Evan Bayh entering the race to regain the seat, which he held from 1999 to 2011.

The Indiana Democratic Party formally chose Bayh as Hill's replacement on July 22. Following his entry, Bayh was initially seen as the frontrunner in the race. However, during the campaign, he faced heavy criticism over his post-Senate career as a lobbyist, as well as questions about his residency in the state. Young ultimately won by a comfortable margin, defeating Bayh in the general election by 10 points.

Background Republican Senator Dan Coats, who had served in the Senate since 2011, and previously from 1989 to 1999, stated that he planned to run for re-election, but in March 2014 his chief of staff said that Coats had "decided not to decide whether to run again until after the midterm elections".

On March 24, 2015, Coats announced that he would not run for re-election, citing that he would be of advanced age (just under 80 years old) by the end of the 2017–2023 term, should he complete it.

Republican primary Candidates Declared Marlin Stutzman, U.S. representative and candidate for the U.S. Senate in 2010 Todd Young, U.S. representative

Withdrawn Kevin Grant, financial consultant and candidate for IN-04 in 2014 (running for IN-04) Eric Holcomb, Senator Coats' chief of staff and former chairman of the Indiana Republican Party (appointed and ran for lieutenant governor before replacing Mike Pence as the nominee for governor)

Declined Greg Ballard, former mayor of Indianapolis Jim Banks, state senator (running for IN-03) Brian Bosma, speaker of the Indiana House of Representatives Susan Brooks, U.S. representative and former United States attorney for the Southern District of Indiana (running for re-election) Larry Bucshon, U.S. representative (running for re-election) Dan Coats, incumbent U.S. senator Mitch Daniels, president of Purdue University and former governor of Indiana Mike Delph, state senator Richard Lugar, former U.S. senator Jim Merritt, state senator Luke Messer, U.S. representative (running for re-election) Mike Pence, governor of Indiana and former U.S. representative (running for vice president of the United States) Todd Rokita, U.S. representative and former secretary of state of Indiana (running for re-election) Jackie Walorski, U.S. representative (running for re-election) Greg Zoeller, Indiana attorney general (running for IN-09)

Endorsements

Polling Poll source Date(s)administered Samplesize Margin oferror ToddYoung MarlinStutzman UndecidedNBC/WSJ/MaristNBC/WSJ/Marist April 26–28, 2016 645 ± 3.9% 56% 24% 20%IPFW/Downs Center April 13–27, 2016 400 ± 4.9% 42% 34% 24%WTHR/Howey April 18–21, 2016 507 ± 4.0% 43% 31% 26%

Results

Democratic primary Candidates Declared Baron Hill, former U.S. representative and nominee for U.S. Senate in 1990 (withdrew after winning primary)

Withdrawn John Dickerson, former nonprofit organization director

Declined Pete Buttigieg, mayor of South Bend André Carson, U.S. representative (running for re-election) Brad Ellsworth, former U.S. representative and nominee for the U.S. Senate in 2010 John Gregg, former speaker of the Indiana House of Representatives and nominee for governor in 2012 (running for governor) Christina Hale, state representative (running for lieutenant governor) Thomas McDermott Jr., mayor of Hammond Bart Peterson, former mayor of Indianapolis Glenda Ritz, Indiana Superintendent of Public Instruction (running for re-election) Jonathan Weinzapfel, former mayor of Evansville and nominee for Indiana's 8th congressional district in 1996

Endorsements

Results

Democratic State Central Committee selection On July 11, 2016, CNN's Tom LoBianco announced that Bayh would enter the race to regain his old Senate seat and Hill would drop out and withdraw his name from the November ballot. Hill soon released a statement formally dropping out of the race, saying he did not "...want to stand in the way of Democrats winning Indiana and the U.S. Senate. That would not be fair to my party or my state. And, the stakes are far too high in this election not to put my country above my own political ambitions," without explicitly endorsing Bayh. The first candidate to declare was Bob Kern, a frequent candidate for Congress in various districts around the state. Bayh officially declared for the race July 13. The Indiana Democratic Party's State Central Committee chose Bayh as Hill's replacement, for the general election.

Candidates Evan Bayh, former U.S. senator and governor of Indiana Bob Kern, candidate for IN-7 in 2012, IN-2 in 2014, and IN-9 2016

General election Candidates Evan Bayh (D), former U.S. senator and governor of Indiana Lucy Brenton (L) Todd Young (R), U.S. representative

Debates Dates Location Young Bayh Brenton LinkOctober 18, 2016Indianapolis, IndianaParticipantParticipantParticipant

Endorsements

Predictions Source Ranking As of The Cook Political Report November 2, 2016 Sabato's Crystal Ball November 7, 2016 Rothenberg Political Report November 3, 2016 Daily Kos November 8, 2016 Real Clear Politics November 7, 2016

Polling

Poll source Date(s)administered Samplesize Margin oferror ToddYoung (R) EvanBayh (D) LucyBrenton (L) UndecidedSurveyMonkey November 1–7, 2016 1,700 ± 4.6% 53% 42% — 5%SurveyMonkey Oct 31–Nov 6, 2016 1,383 ± 4.6% 52% 43% — 5%WTHR/Howey November 1–3, 2016 600 ± 4.0% 46% 41% 6% 7%SurveyMonkey Oct 28–Nov 3, 2016 923 ± 4.6% 52% 43% — 5%SurveyMonkey Oct 27–Nov 2, 2016 790 ± 4.6% 51% 44% — 5%Gravis Marketing Oct 30–Nov 1, 2016 399 ± 4.9% 37% 40% 7% 16%SurveyMonkey Oct 26–Nov 1, 2016 638 ± 4.6% 51% 46% — 3%SurveyMonkey October 25–31, 2016 674 ± 4.6% 50% 46% — 4%Monmouth University October 27–30, 2016 402 ± 4.9% 45% 45% 4% 5%Gravis Marketing October 22–24, 2016 596 ± 2.3% 37% 39% 7% 17%WISH/Ball State Hoosier Survey October 10–16, 2016 544 ± 3.9% 43% 49% — 6%Monmouth University October 11–13, 2016 402 ± 4.9% 42% 48% 6% 4%Public Opinion Strategies (R-Young)Public Opinion Strategies (R-Young) October 9–11, 2016 609 ± 4.0% 40% 39% 8% 13%The Times-Picayune/LucidThe Times-Picayune/Lucid October 7–10, 2016 1,123 ± 3.0% 43% 46% — 11%WTHR/Howey October 3–5, 2016 600 ± 4.0% 41% 42% 8% 9%Public Opinion Strategies (R-Young) October 3, 2016Date of polling memo, not field dates, which remain unreleased – – 38% 42% 7% 13%Public Opinion Strategies (R-Young) September 21, 2016 – – 39% 44% 9% 8%WTHR/HoweyWTHR/Howey September 6–8, 2016 600 ± 4.0% 40% 44% 5% 11%Public Opinion Strategies (R-Young) September 1, 2016 – – 35% 44% 6% 15%Garin-Hart-Yang (D-Bayh) August 15–18, 2016 801 ± 3.5% 39% 55% — 6%Monmouth University August 13–16, 2016 403 ± 4.9% 41% 48% 4% 7%Global Strategy Group (D-SMP) August 10–14, 2016 801 ± 3.5% 36% 54% — 10%Public Opinion Strategies (R-Young) August 8, 2016 – – 35% 48% 7% 10%Expedition Strategies (R-Gregg) August 1–3, 2016 600 ± 4.0% 32% 58% — 9%Garin-Hart-Yang (D-DSCC) July 12–14, 2016 602 ± 4.1% 33% 54% — 13%

with Baron Hill Poll source Date(s)administered Samplesize Margin oferror ToddYoung (R) BaronHill (D) UndecidedBellwether Research May 11–15, 2016 600 ± 4.0% 36% 22% 30%WTHR/Howey April 18–21, 2016 500 ± 4.3% 48% 30% 22%

with Marlin Stutzman Poll source Date(s)administered Samplesize Margin oferror MarlinStutzman (R) BaronHill (D) UndecidedWTHR/Howey April 18–21, 2016 500 ± 4.0% 39% 36% 25%

Results

Results by county