2012 United States House of Representatives election in South Dakota

The 2012 United States House of Representatives election in South Dakota was held on Tuesday, November 6, 2012, to elect the single U.S. Representative from South Dakota's At-large congressional district, comprising the entire state of South Dakota. The election coincided with the elections of other federal and state offices, including a quadrennial presidential election.

Nominee

 * Kristi Noem, incumbent U.S. Representative

Nominee

 * Matt Varilek, staffer for Senator Tim Johnson

Eliminated in primary

 * Jeff Barth, Minnehaha County Commissioner

Declined

 * Stephanie Herseth Sandlin, former U.S. Representative

Counties that flipped from Democratic to Republican

 * Beadle (Largest city: Huron)
 * Bon Homme (Largest city: Springfield)
 * Brule (Largest city: Chamberlain)
 * Corson (Largest city: McLaughlin)
 * Deuel (Largest city: Clear Lake)
 * Grant (Largest city: Milbank)
 * Jerauld (Largest city: Wessington Springs)
 * Kingsbury (Largest city: De Smet)
 * Lake (Largest city: Madison)
 * Miner (Largest city: Howard)
 * Minnehaha (Largest city: Sioux Falls)
 * Moody (Largest city: Flandreau)
 * Sanborn (Largest city: Woonsocket)
 * Brookings (largest city: Brookings)
 * Aurora (largest city: Plankinton)
 * Bennett (largest city: Martin)
 * Clark (largest city: Clark)
 * Spink (largest city: Redfield)
 * Mellette (Largest city: White River)