Corey Stewart has served on the Prince William County board since 2003, and was first elected chairman in 2006.
Stewart hasn't ruled out running for the Senate seat, soon to be vacated by Jim Webb, but he says he's not likely to make a decision before the end of this year.
He is running for reelection as county board of supervisors chair and says looking beyond that race would be a mistake.
"When you plan that far ahead you find yourself getting into trouble...I'm not gonna do that..I'm gonna stay focused on reelection," Stewart says.
Stewart is a Republican best known for his county's crackdown on illegal immigrants and his strident criticism of federal immigration enforcement.
He hasn't shied away from controversy and he says he knows that has emboldened some political opponents.
"I definitely created some enemies when I pursued that policy in particular. That's the consequence of standing firm on a controversial issue," Stewart says.
So far four people say they'll challenge Stewart in the race for board chair: a fellow Republican, an independent, and two Democrats.