As expected, Sen. Sam Brownback (R-Kan.) easily won the Republican nomination for governor of Kansas.
With five percent of the precincts reporting, the Associated Press called the race for Brownback, who lead challenger Joan Heffington 81 percent to 18 percent.
State Sen. Tom Holland won his uncontested Democratic primary.
Brownback is the favorite to win in November. He did not seek reelection to his Senate seat because of self-imposed term limits.
The race to replace him in the upper chamber has been a nasty campaign between two Republican House members.
Reps. Jerry Moran and Todd Tiahrt have both fought hard for the Republican nomination, as the primary winner is expected to hold the seat in the Republican-leaning state.
Moran has lead in the polls, but early returns have shown the race tightening.