Tracking the Senate
Here's the key number you need to know for following the battle for control of the Senate: 10.
There 33 seats up for grabs. Of the seats not up for grabs, 40 belong to Republicans and 27 belong to Democrats. That stacks the odds quite a bit against the Dems, but polls are showing that Dems are strong in most of the races. So the number to follow is whether the Repubs can win just 10 of the 33 to create a 50-50 split, in which case Vice President Dick Cheney would cast the tiebreaker vote in close Senate votes.
CNN has already called the low-hanging fruit, the obvious races: Lugar (R) will win in Indiana, and Bernie Sanders (independent, but usually votes with the Dems) will win Vermont. So the Republicans have nine to go.
And realistically, there are six more seats that are considered safe for the Repubs, so really, they have only three to go. Fortunately for the Dems, there are eight seats that are considered neck-and-neck: Rhode Island, New Jersey, Maryland, Virginia, Tennessee, Missouri, Arizona, and Montana.