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2018 United States Senate election in Missouri
From Wikipedia, the free encyclopedia
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The 2018 United States Senate election in Missouri took place on November 6, 2018, to elect a member of the United States Senate to represent the State of Missouri, concurrently with other elections to the United States Senate, elections to the United States House of Representatives, and various state and local elections, including Missouri's quadrennial State Auditor election.
This was one of ten Democratic-held Senate seats up for election in a state Donald Trump won in the 2016 presidential election. Incumbent Democratic Senator Claire McCaskill ran for re-election to a third term. McCaskill easily won her party's nomination, defeating several minor candidates in the primary, while Missouri Attorney General Josh Hawley comfortably won the Republican primary.[2]
The candidate filing deadline was March 27, 2018, and the primary election was held on August 7, 2018.[3] Pollsters predicted a tight race; however, Hawley defeated McCaskill on election day by 5.8%, taking 51.4% of the vote to McCaskill's 45.6%, a somewhat larger margin than expected. This resulted in Republicans holding both Senate seats in Missouri for the first time since McCaskill took office in 2007. Hawley was also the youngest incumbent senator at that time, and continued to be until the inauguration of Jon Ossoff in 2021.[4] Despite her loss, McCaskill won a higher share of the vote than Hillary Clinton won in 2016. This is the last U.S. Senate race in Missouri where the incumbent was defeated.
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Democratic primary
Candidates
Nominated
- Claire McCaskill, incumbent U.S. Senator[5][6]
Eliminated in primary
Endorsements
Claire McCaskill
- U.S. executive branch officials
- U.S. Senators
- Catherine Cortez Masto, U.S. senator (NV)[10]
- Dick Durbin, U.S. senator (IL) and Senate Minority Whip[11]
- Kamala Harris, U.S. senator (CA)[12]
- Maggie Hassan, U.S. senator (NH)[13]
- Doug Jones, U.S. Senator (AL)[14]
- Elizabeth Warren, U.S. senator (MA)[15]
- State officials
- Jason Kander, former Missouri Secretary of State, founder of Let America Vote and host of Majority 54[16]
Results

McCaskill
- 80–90%
- 70–80%
- 60–70%
- 50–60%
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Republican primary
Summarize
Perspective
Candidates
Nominated
- Josh Hawley, Missouri Attorney General[18]
Eliminated in primary
- Brian Hagg[8]
- Bradley Krembs[8]
- Tony Monetti, retired bomber pilot and assistant dean of aviation at University of Central Missouri[19]
- Kristi Nichols, activist and candidate for the U.S. Senate in 2010 and 2016[8]
- Ken Patterson, candidate for St. Louis County Executive in 2010[8]
- Austin Petersen, businessman and Libertarian candidate for presidential nomination in 2016[20][21]
- Peter Pfeifer[8]
- Fred Ryman, Constitution nominee for the U.S. Senate in 2016[8]
- Christina Smith[8]
- Courtland Sykes, veteran and former congressional aide[22]
Withdrew
Declined
- Paul Curtman, state representative[24][25]
- Eric Greitens, former Governor of Missouri[26][27][28]
- Marsha Haefner, state representative[29]
- Vicky Hartzler, U.S. representative[30]
- Aaron Hedlund, economics professor[31]
- Ed Martin, former chairman of the Missouri Republican Party, nominee for MO-03 in 2010 and nominee for attorney general in 2012[28]
- Todd Richardson, Speaker of the Missouri House of Representatives[32]
- Eric Schmitt, state treasurer[33]
- Ann Wagner, U.S. representative and former U.S. Ambassador to Luxembourg[34]
- David Wasinger, attorney[35][36]
Endorsements
Josh Hawley
- U.S. executive branch officials
- John Ashcroft, former United States Attorney General and former senator from Missouri[37]
- George W. Bush, 43rd president of the United States[38][39][40]
- Mike Pence, vice president of the United States[41]
- U.S. senators
- Kit Bond, former senator from Missouri[37]
- John Danforth, former senator from Missouri and United States Ambassador to the United Nations[41]
- Mitch McConnell, senator from Kentucky and Senate Majority Leader[42]
- Jim Talent, former senator from Missouri[37]
- U.S. representatives
- Billy Long, U.S. representative (MO-7)
- Jason Smith, U.S. representative (MO-08)[43]
- State officials
- Mike Parson, governor of Missouri[44]
- Eric Schmitt, treasurer of Missouri[45]
Cabinet-level officials
- Steve Bannon, former White House Chief Strategist and executive chair of Breitbart News[46]
- Organizations
- Club for Growth[47]
- Missouri Right to Life[48]
Austin Petersen
Debates
Polling
Hypothetical polling
Results

Hawley
- 60–70%
- 50–60%
- 40–50%
Monetti
- 40–50%
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Libertarian primary
Candidates
Nominated
- Japheth Campbell, entrepreneur[56]
Withdrew
Declined
- Alicia Dearn, attorney and candidate for vice president of the United States in 2016[58]
- Austin Petersen, Libertarian candidate for president of the United States in 2016 (running as a Republican)[59]
Results

Campbell
- 100%
No votes
- No votes
Green primary
Candidates
Nominated
- Jo Crain
Eliminated in primary
- Jerome Bauer
Results

Crain
- 100%
- 80–90%
- 70–80%
- 60–70%
- 50–60%
Crain/Bauer tie
- 50%
Bauer
- 50–60%
- 60–70%
- 70–80%
- 80–90%
- 100%
No votes
- No votes
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Independents
Candidates
Declared
- Craig O'Dear, attorney[60]
General election
Summarize
Perspective
Predictions
Debates
- Complete video of debate, October 18, 2018
Fundraising
Polling
Hypothetical polling
with Austin Petersen
with generic Republican
with Vicky Hartzler
with Blaine Luetkemeyer
with Todd Richardson
with Eric Schmitt
with Jason Smith
Results


Senator McCaskill conceded a few hours after the polls closed on election day. Despite performing strongly in the St. Louis suburbs, she ran well behind her 2012 vote in Southeast Missouri, especially in the Lead Belt and the Missouri Bootheel. She also ran poorly in the northern part of the state.[116]
Counties that flipped from Democratic to Republican
- Audrain (largest city: Mexico)
- Bates (largest city: Butler)
- Chariton (largest city: Salisbury)
- Clark (largest city: Kahoka)
- Clinton (largest city: Cameron)
- Daviess (largest city: Gallatin)
- Dunklin (largest city: Kennett)
- Franklin (largest city: Washington)
- Gentry (largest city: Albany)
- Grundy (largest city: Trenton)
- Henry (largest city: Clinton)
- Hickory (largest city: Hermitage)
- Howard (largest city: Fayette)
- Iron (largest city: Ironton)
- Knox (largest city: Edina)
- Lafayette (largest city: Odessa)
- Lewis (largest city: Canton)
- Linn (largest city: Brookfield)
- Livingston (largest city: Chillicothe)
- Madison (largest city: Fredericktown)
- Nodaway (largest city: Maryville)
- Pike (largest city: Bowling Green)
- Reynolds (largest city: Ellington)
- Schuyler (largest city: Lancaster)
- Scotland (largest city: Memphis)
- Scott (largest city: Sikeston)
- Shannon (largest city: Winona)
- St. Francois (largest city: Farmington)
- Sullivan (largest city: Milan)
- Wayne (largest city: Piedmont)
- Worth (largest city: Grant City)
- Buchanan (largest city: St. Joseph)
- Jefferson (largest city: Arnold)
- Mississippi (largest city: Charleston)
- New Madrid (largest city: New Madrid)
- Pemiscot (largest city: Caruthersville)
- Platte (largest city: Kansas City)
- Ray (largest city: Richmond)
- Saline (largest city: Marshall)
- Washington (largest city: Potosi)
- Sainte Genevieve (largest city: Ste. Genevieve)
- St. Charles (largest city: O'Fallon)
- Pettis (largest city: Sedalia)
- Pulaski (largest city: Fort Leonard Wood)
- Adair (largest city: Kirksville)
- Andrew (largest city: Savannah)
- Cass (largest city: Harrisonville)
- Greene (largest city: Springfield)
- Johnson (largest city: Warrensburg)
By congressional district
Hawley won five of eight congressional districts, with the remaining three going to McCaskill, including one that elected a Republican.[118]
Voter demographics
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References
External links
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