Current Sonoma County supervisors Efren Carrillo and Shirlee Zane are coming back for seconds.
The two first-time supervisors, who were elected in 2008, are both planning to run for re-election next June.
In separate interviews Friday about the county's redistricting plans, the supervisors confirmed their plans to run.
Zane, 51, who represents most of Santa Rosa and Rohnert Park, had been seen as a possible candidate in next year's race to fill the congressional seat held by Rep. Lynn Woolsey, D-Petaluma. But she said changes to that seat in the state redistricting process and unfinished projects at the county level led to her decision to stick around.
"I love local government and I don't want to be anywhere else," Zane said. She kicked off her campaign recently with a fundraiser that she said took in $30,000.
Carrillo, who serves as the board chairman, is also seen as interested in higher office. But the 30-year-old supervisor said he hopes to continue representing the west county after next year's election.
He'll kick off his campaign with supporters at an event in September.
Valerie Brown, the other supervisor whose term expires next year, has yet to announce her plans.
Candidates who've filed to run for the Sonoma Valley seat include Mark Bramfitt, an energy consultant and board member on the Valley of the Moon Water District and Sonoma Valley Citizens Advisory Commission, and Gina Cuclis, a communications consultant and former Sonoma planning commissioner who resides in Boyes Hot Springs.