United States House of Representatives elections in Missouri, 2012

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	Primary Date ; August 7, 2012
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	2012 U.S. Senate Elections

The 2012 U.S. House of Representatives elections in Missouri took place on November 6, 2012. Voters elected eight candidates to serve in the U.S. House, one from each of the state's eight congressional districts.

Candidate Filing Deadline	Primary Election	General Election
March 27, 2012	August 7, 2012	November 6, 2012

Primary: Missouri has an open primary system, meaning any registered voter can vote in any party's primary.

Voter registration: Voters had to register to vote in the primary by July 11. For the general election, the voter registration deadline was October 10.^[1]

See also: Missouri elections, 2012

The Center for Voting and Democracy (Fairvote) projected that Democrats would win two districts while Republicans would win five seats. It did not make a projection for the remaining district.^[2]

Primary competitiveness

See also: National contested primary average during the 2012 U.S. congressional elections

Missouri tied with Mississippi, Nevada, and Ohio for having the 15th most competitive congressional primaries in 2012, with 62.5% of major party primaries having been contested (10 out of 16). The national average was 54.31%.

Eight U.S. House incumbents sought re-election in Missouri in 2012. 6 of those 8 (75%) faced a primary challenger. Nationwide, 200 out of the 386 incumbents seeking re-election faced a primary challenger (51.81%).

Partisan breakdown

Heading into the November 6 election, the Republican Party held six of the nine Congressional seats from Missouri. However, the state lost one seat after the 2010 census and elected eight representatives.

Members of the U.S. House from Missouri -- Partisan Breakdown
Party		As of November 2012	After the 2012 Election
	Democratic Party	3	2
	Republican Party	6	6
Total		9	8

Incumbents

Heading into the 2012 election, the incumbents for the nine congressional districts were:

Name	Party	District
Billy Long	Republican	7
Blaine Luetkemeyer	Republican	9
Emanuel Cleaver	Democratic	5
Jo Ann Emerson	Republican	8
Russ Carnahan	Democratic	3
Sam Graves	Republican	6
W. Todd Akin	Republican	2
Vicky Hartzler	Republican	4
William Lacy Clay	Democratic	1

Margin of victory for winners

There were a total of 8 seats up for election in 2012 in Missouri. The following table shows the margin of victory for each district winner, which is calculated by examining the percentage difference between the top-two vote getters. If the race was uncontested, the margin of victory is listed as 100%.

District	Winner	Margin of Victory	Total Vote	Top Opponent
Missouri, District 1	William Lacy Clay	60.8%	340,583	Robyn Hamlin
Missouri, District 2	Ann Wagner	23%	394,448	Glenn Koenen
Missouri, District 3	Blaine Luetkemeyer	30.6%	338,385	Eric C. Mayer
Missouri, District 4	Vicky Hartzler	24.8%	318,723	Teresa Hensley
Missouri, District 5	Emanuel Cleaver	23.6%	330,936	Jacob Turk
Missouri, District 6	Sam Graves	32.5%	333,688	Kyle Yarber
Missouri, District 7	Billy Long	33%	318,731	Jim Evans
Missouri, District 8	Jo Ann Emerson	47.4%	300,391	Jack Rushin

General election candidates

District	General Election Candidates	Incumbent	2012 Winner	Partisan Switch?
1st	Lacy Clay Robyn Hamlin Robb E. Cunningham	William Lacy Clay	Lacy Clay	No
2nd	Glenn Koenen Ann Wagner Bill Slantz Anatol Zorikova	W. Todd Akin	Ann Wagner	No
3rd	Eric C. Mayer Blaine Luetkemeyer Steven Wilson	Russ Carnahan	Blaine Luetkemeyer	Yes
4th	Teresa Hensley Vicky Hartzler Thomas Holbrook Greg Cowan	Vicky Hartzler	Vicky Hartzler	No
5th	Emanuel Cleaver Jacob Turk Randy Langkraehr	Emanuel Cleaver	Emanuel Cleaver	No
6th	Kyle Yarber Sam Graves Russ Lee Monchil	Sam Graves	Sam Graves	No
7th	Jim Evans Billy Long Kevin Craig	Billy Long	Billy Long	No
8th	Jack Rushin Jo Ann Emerson Rick Vandeven	Jo Ann Emerson	Jo Ann Emerson	No
9th	District Removed in Redistricting	Blaine Luetkemeyer	N/A	N/A

Candidates

Note: Election results were added on election night as races were called. Vote totals were added after official election results had been certified. Click here for more information about Ballotpedia's election coverage plan. Please contact us about errors in this list.

1st Congressional District

General election candidates

Lacy Clay

Robyn Hamlin

Robb E. Cunningham

August 7, 2012, primary results

Democratic Primary

Russ Carnahan: Incumbent from former 3rd District^[3]
Lacy Clay: Incumbent^[3]^[4]a
Candice Britton^[5]

Republican Primary

Martin D. Baker: Political Organizer^[5]
Robyn Hamlin: Small Business Owner^[5]^[4]a

Libertarian Candidate

Robb E. Cunningham: Former candidate for mayor of St. Louis^[5]a

2nd Congressional District

General election candidates

August 7, 2012, primary results

Democratic Primary

Marshall Works: Insurance Executive^[5]
George Weber: Realtor^[5]
Harold Whitfield: Attorney^[5]
Glenn Koenen:a Non-profit Executive^[5]

Note: Candidates Harold Whitfield and Glenn Koenen were separated by a small percentage of votes, with the race too close to call.^[6] On August 9, 2012 Whitfield announced that he would request a recount, as the race was separated by less than 1 percent of the votes.^[7] On September 13, 2012 the recount was completed and Koenen was declared the winner.^[8]

Republican Primary