Some tea party nominees could be weak general election candidates. Others could change the Senate. Here are six key primaries to watch.
Palin cites border security as her main reason to impeach Obama, and she is not the first to call for such a move. But the votes aren't there, and the maneuver could hurt the GOP.
A new poll offers evidence that the trend toward increasingly polarized US politics may be a stronger tidal pull than the desire to stand independent from the parties.