Obama will be in McLean tonight to appear at a fundraiser and a campaign rally for Creigh Deeds.
Deeds faces a tough race with former Republican Attorney General Bob McDonnell. It's one of only two governor's races nationwide this year.
Virginia used to be a reliably Republican state, but it went to Obama in 2008. Obama's advisers recognize the race could be seen as a referendum on the White House and the Democratic Congress.