At midnight, Allen is leading the Virginia Senate race by 1,868 votes, according to the Virginia Board of Elections.
The Washington Post says absentee ballots are going to matter -- apparently 130,000 absentee ballots have been requested in Virginia.
NPR says there will very likely be a recount, given the margin. It's pretty clear we aren't going to know what happened in Virginia anytime soon.
That could mean that control of the Senate will be up in the air, too.