The race has long been considered a slam-dunk for Barney Frank, but now it's getting some attention. That's partly because of his status as a powerful Democrat that Republicans love to hate.
Increasing numbers of Americans can vote by mail or absentee ballots. This makes it harder for polls to gauge who the winner might be and means some close races might not be called for days.
The tea party movement has evolved from a scattered insurgency into a sophisticated, organized effort. Its energy and enthusiasm about the midterm elections is helping Republicans.
Among likely voters, the Republican advantage for this election is at least 13 percentage points, says a new Gallup poll. That's higher than the three-point GOP edge among registered voters.
With Democratic Sen. Harry Reid and Republican Sharron Angle flaying each other with negative ads in Nevada, both have unfavorability ratings of more than 50 percent.
A new poll shows two California Democrats, Jerry Brown and Barbara Boxer, opening leads in their bids for governor and Senate. But Brown's opponent questions the poll.
Is Lisa Murkowski becoming her own kind of 'mama grizzly' in Alaska? Or is her decision to fight the tea party as a write-in US Senate candidate a lost cause?
Anti-incumbent sentiment could be pivotal in Tuesday’s votes. Blanche Lincoln and Arlen Specter, both Democratic senators, are facing tough challenges from the left.
Reports suggest that Florida Gov. Charlie Crist will announce Thursday that's he's running for US Senate as an independent. If he does, he has to thread a political needle to win.