We'll be following events tonight here as they occur -- for example, Mitch McConnell has just been declared the winner of his race against Alison Grimes in Kentucky, and CNN is reporting that based on exit polls, David Perdue and Michelle Nunn are locked in a tight race, with Perdue at 49 percent and Nunn at 48 percent.
If that holds, it's a January runoff.
UPDATE 7:30: Exit polls in North Carolina give Kay Hagan a three-point advantage, so while that's too close to call it for Hagan, it suggests that she's doing fairly well.
UPDATE at 7:55: I haven't seen exit numbers for the Georgia governor's race, and of course it's early, but it's interesting that so far, Nathan Deal is underperforming his fellow Republican, David Perdue, by about .75 of a percentage point. That could presage a runoff in that race as well.
UPDATE at 8: CNN reports Jeanne Shaheen up 52-48 in the exit poll, again too close to project a winner, but it would appear that Shaheen may survive. If both Hagan and Shaheen hold on, a Republican wave is less likely.
UPDATE at 8:30: Fox reports that Republican Tom Cotton has defeated incumbent Democrat Mark Pryor in Arkansas; that's not unexpected, but it's a necessary step toward the GOP goal of taking the Senate.
UPDATE at 8:45: ABC indeed projecting Shaheen as the winner in New Hampshire, defeating Scott Brown.
UPDATE at 9:05: CNN says exit polls give Gardner in Colorado and Roberts in Kansas -- both Republicans -- leads that are too small to project, but says Mike Rounds (R) in South Dakota will win. It does look like Mitch McConnell will indeed be Senate Majority Leader.
UPDATE at 9:09: ... and yes, it appears as though U.S. Rep. John Barrow, the lone surviving white Democrat in the South, might have finally fallen off that tightrope he's been walking for years.
UPDATE at 9:20: I haven't mentioned the Virginia Senate race, where Republican Ed Gillespie is doing surprisingly well. That would be a real shocker with implications for 2016.
UPDATE at 9:50: At this point, I'm thinking Harry Reid should be clearing out his majority leader's office ...
UPDATE at 9:58: Fox calls Colorado for the Republican Gardner. At this point, it's looking like the Republicans may end the night with a 53-47 advantage, and maybe more.
UPDATE at 10:30: Short of a huge turnout in Fulton and DeKalb counties, which are still being tallied, it's looking as if both David Perdue and Nathan Deal will be elected without a runoff.
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