Kansas State Senate: With a composition of 32 Republicans and 8 Democrats, it was highly unlikely that the Senate would change hands. However, there were several competitive Republican primary battles that emerged in the wake of redistricting.
Seven moderate Republican incumbents were defeated by more conservative rivals in an effort to oust members of the Senate who were hostile to parts of Gov. Sam Brownback's agenda. This fits in with a larger 2012 narrative nationwide in which moderates from both parties are struggling to keep their seats.
Kansas House of Representatives: Like the Senate, it was unlikely that the House would swing to Democratic control. However, there were five districts with Republican primary battles between incumbents, and one district where incumbent Democrats fought to maintain a seat.
- Due to redistricting, District 14 was open. Two House Republicans, John Grange and Forrest Knox, faced off in the August 7 primary. Knox came out victorious.
- District 15: Incumbent Jeff King (R) faced a primary challenge from Dwayne Umbarger (R). Umbarger was placed into King's district after the 2010 census prompted redistricting in Kansas. King successfully held his seat.
- District 61 had a relatively crowded primary Republican field featuring incumbents Richard Carlson and Trent LeDoux, as well as challenger Daniel A. Brenner. Carlson beat out his opponents.
- District 76 featured an unusual Republican primary in which three incumbents faced off: Peggy Mast, elected in 1996, Bill Otto, elected in 2004, and William Prescott, elected in 2008. The longest serving of the three, Mast, won.
- District 86: Veteran Democrats Judith Loganbill and Jim Ward challenged each other in the primary on August 7, and Ward was the winner.
- Republican Anthony Brown survived his primary challenge from James C. "J.C." Tellefson, but was defeated by Democrat Tom Holland in the general election.
- Veteran incumbent Ralph Ostmeyer (R) survived s a primary challenge from John E. Miller. He defeated incumbent Allen Clark Schmidt (D), who was appointed to the seat in February 2011.
- Democrat Nile Dillmore and Republican Brenda Landwehr faced no opposition in their respective primaries, and Dillmore was victorious in the general election on November 6.
- Incumbent Kyle D. Hoffman (R) survived a primary battle from Terry Nunemaker. Hoffman won the Republican nomination, he defeated incumbent Democrat Vincent Wetta in the general election.
<ref> tags exist, but no
<references/> tag was found