The 2010 Kansas gubernatorial election was held on November 2, 2010. Incumbent Governor Mark Parkinson, who assumed office when previous Governor Kathleen Sebelius was sworn in as the United States Secretary of Health and Human Services on April 28, 2009, declined to seek election to a full term. United States Senator Sam Brownback, who unsuccessfully ran for president in 2008, emerged as the Republican nominee, facing off against Democratic State Senator Tom Holland, who was unopposed for his party's nomination. Brownback defeated Holland in a landslide to become the 46th Governor of Kansas. As of 2022, this is the last gubernatorial election in Kansas where the winner received over 50% of the vote.

Democratic primary

Candidates

Results

Republican primary

Candidates

Polling

Results

General election

Predictions

Polling

Results

Counties that flipped from Democratic to Republican

• Jefferson (largest municipality: Valley Falls) • Crawford (largest city: Pittsburg) • Riley (largest municipality: Manhattan) • Shawnee (largest municipality: Topeka) • Lyon (largest municipality: Emporia) • Sherman (largest municipality: Goodland) • Decatur (largest municipality: Oberlin) • Sheridan (largest municipality: Hoxie) • Graham (largest municipality: Hill City) • Lane (largest municipality: Dighton) • Trego (largest municipality: WaKeeney) • Ford (largest municipality: Dodge City) • Smith (largest municipality: Smith Center) • Phillips (largest municipality: Phillipsburg) • Rooks (largest municipality: Plainville) • Osborne (largest municipality: Osborne) • Russell (largest municipality: Russell) • Ellis (largest municipality: Hays) • Rush (largest municipality: La Crosse) • Barton (largest municipality: Great Bend) • Pawnee (largest municipality: Larned) • Stafford (largest municipality: St. John) • Edwards (largest municipality: Kinsley) • Kiowa (largest municipality: Greensburg) • Mitchell (largest municipality: Beloit) • Lincoln (largest municipality: Lincoln) • Ellsworth (largest municipality: Ellsworth) • Rice (largest municipality: Lyons) • Reno (largest municipality: Hutchinson) • Kingman (largest municipality: Kingman) • Harvey (largest municipality: Newton) • Harper (largest municipality: Anthony) • Sumner (largest municipality: Wellington) • McPherson (largest municipality: McPherson) • Saline (largest municipality: Salina) • Ottawa (largest municipality: Minneapolis) • Cloud (largest municipality: Concordia) • Clay (largest municipality: Clay Center) • Geary (Largest city: Junction City) • Dickinson (Largest city: Abilene) • Morris (Largest city: Council Grove) • Marshall (Largest city: Marysville) • Nemaha (Largest city: Sabetha) • Brown (Largest city: Hiawatha) • Doniphan (Largest city: Wathena) • Atchison (Largest city: Atchison) • Leavenworth (Largest city: Leavenworth) • Jackson (Largest city: Holton) • Osage (Largest city: Osage City) • Franklin (Largest city: Ottawa) • Miami (Largest city: Spring Hill) • Anderson (Largest city: Garnett) • Linn (Largest city: Pleasanton) • Woodson (Largest city: Yates Center) • Wilson (Largest city: Neodesha) • Allen (Largest city: Iola) • Bourbon (Largest city: Fort Scott) • Neosho (Largest city: Chanute) • Labette (Largest city: Parsons) • Cherokee (Largest city: Baxter Springs) • Johnson (largest municipality: Overland Park)