2016 United States Senate election in Missouri

The 2016 United States Senate election in Missouri was held on November 8, 2016, to elect a member of the United States Senate to represent the State of Missouri. It was held concurrently with the 2016 U.S. presidential election, as well as other elections to the United States Senate in other states, elections to the United States House of Representatives, and various state and local elections. The primaries were held on August 2.

Incumbent Republican Senator Roy Blunt won re-election to a second term in office, defeating Democratic Missouri Secretary of State Jason Kander. Despite losing, Kander's margin of defeat was 15.7 percentage points closer than that of Democratic presidential nominee Hillary Clinton in the concurrent presidential election in the state. This is also the closest a Democrat has come to winning this seat since 1980.

Republican primary
Despite being considered an "establishment" Republican, Blunt did not face serious Tea Party opposition due to his efforts to cultivate relationships with activists in Missouri, his effectiveness at "threading the needle" by keeping conservative and establishment Republicans fairly satisfied, and the open gubernatorial election, which attracted the most attention from Republicans.

Declared

 * Roy Blunt, incumbent senator since 2011
 * Ryan Luethy, financial services worker
 * Bernie Mowinski, retired army sergeant and perennial candidate
 * Kristi Nichols, sales manager, Tea Party activist and candidate for the U.S. Senate in 2010

Withdrew

 * Christopher Batsche, businessman (running for MO-07)

Declined

 * Todd Akin, former U.S. Representative from 2001 to 2013 and nominee for the U.S. Senate in 2012
 * John Brunner, businessman and candidate for the U.S. Senate in 2012 (running for Governor)
 * John Lamping, former state senator

Results
[[File:2016 MO US Senate Republican primary.svg|thumb|Results by county: {{legend|#E27F7F|Blunt}}

{{legend|#D75D5D|60–70%}}

{{legend|#D72F30|70–80%}}

{{legend|#C21B18|80–90%}} ]]

Declared

 * Cori Bush, pastor, nurse and co-director of the Truth Telling Project
 * Jason Kander, Secretary of State of Missouri since 2013
 * Robert Mack, military veteran
 * Chief Wana Dubie, marijuana activist

Declined

 * Jay Nixon, Governor of Missouri since 2009
 * Mike Sanders, Jackson County Executive, former Jackson County prosecuting attorney and former chairman of the Missouri Democratic Party
 * Clint Zweifel, State Treasurer of Missouri since 2009

Results
[[File:2016 MO US Senate Democratic primary.svg|thumb|Results by county: {{legend|#7996E2|Kander}}

{{legend|#A5B0FF|40–50%}}

{{legend|#7996E2|50–60%}}

{{legend|#6674DE|60–70%}}

{{legend|#584CDE|70–80%}} ]]

Declared

 * Jonathan Dine, nominee for the U.S. Senate in 2010 and 2012
 * Herschel Young

Declared

 * Fred Ryman

Declared

 * Johnathan McFarland

Write-in

 * Gina Bufe
 * Patrick Lee

Counties that flipped from Republican to Democratic

 * Boone (Largest city: Columbia)
 * Clay (Largest city: Kansas City)
 * Platte (Largest city: Kansas City)