Another hat has been thrown into the ring for Virginia lieutenant governor.

Susan Stimpson, chairwoman of the Stafford County Board of Supervisors, announced her intention to run by way of a Web video, joining an already crowded Republican field.

“I passionately believe in conservative issues ranging from fiscal responsibility and constitutional liberty to defending the value of human life,” she says in the video. “Like you, I’ve been frustrated with those who talk about conservative values on the campaign trail, but vote with the establishment once they get elected.”

Several other Republicans have already gotten in the race or are exploring bids for the job that Lt. Gov. Bill Bolling (R) is giving up to run for governor: Corey A. Stewart, chairman of the Prince William Board of Supervisors; Del. L. Scott Lingamfelter (Prince William); former state senator Jeannemarie Devolites Davis (Fairfax); and Sen. Stephen H. Martin (Chesterfield).

Pete Snyder, chairman of the state GOP’s VA Victory 2012, the Republicans’ coordinated campaign, also is reportedly considering a bid.

So far on the Democrats’ side, just one person is officially in the race: Aneesh Chopra, the nation’s first chief technology officer.

Other Democrats who have been mentioned as possible candidates are: former House minority leader Ward L. Armstrong (Martinsville), Del. Kenneth Cooper Alexander ( Norfolk) and former delegate Paula Miller (Hampton Roads).