Democrats will hold their current margin in the Senate or gain one seat. It all comes down to Montana/Wisconsin.

Polls show we may have a perfect-storm in the Senate, and potentially expand our margin (assuming King will caucus with the Dems).

A bit of an optimistic map. One of the more likely best case scenarios for the Democrats.

Assuming Akin stays in, this race has gone from toss-up to lean Democrat.

Bad news out of Missouri but good news out of Wisconsin. Win some, lose some.

Rasmussen shows Baldwin leading the entire field in Wisconsin. North Dakota appears to be a toss-up/lean Heitkamp. It's still unlikely but it looks like the Democrats could potentially maintain the current balance of power 53/47 or even expand their majority!

I'd like to thank the tea party for turning Indiana and Maine (two entrenched Republican incumbents) into toss-ups/lean Dem.

A little optimistic. If the election were held today I believe we'd lose Montana and North Dakota, with Missouri being razor thin.

Despite the massive amount of Senate seats up, I've felt that the Dems have had a good shot to hold the entire Senate since the beginning of the year. That belief has only intensified. Indiana has been thrown into the toss-up column, Maine is +1 Independent (Democrat).

The crazy Tea Party may have brought our legislative branch into gridlock by taking the House, but they have been all to favorable to Senate Democrats. In 2010, they enabled Democrats to win Nevada, Colorado, and Delaware by nominating lunatics. And with a switch of Manchin or Nelson, would have granted the GOP control of the chamber. In 2012 they seem to doing the same: The tea party has put Indiana into the toss-up column, may make Arizona competitive, and make Missouri and Wisconsin more likely wins for the Democrats.

A strong Democratic scenario. Obama wins with an impressive victory and has coattails in Virginia, Nevada, Wisconsin, and Florida, propelling the Democratic nominees to the finish line.