Actually, I forgot Alaska.
Ted Stevens is many things. He is the longest-serving Republican currently in the Senate. He is a gigantic laughingstock on the Internet, the result of some unfortunate comments he made about the Internet being a series of tubes, which would occasionally become clogged, perhaps with trucks. He is a legendary appropriations force and was the muscle behind the infamous Bridge to Nowhere.
He is also massively corrupt, apparently, having concealed approximately a quarter million dollars worth of gifts he received from various power interests over the years. He is currently on trial on federal corruption charges, and this seems to be dampening his support in a state where he has never received less than two-thirds of the vote in any statewide general election.
Stevens should be toast, but the Alaskan Democratic Party is not replete with battle-hardened politicians. Instead it is replete with people like Mark Begich, the two-term mayor of Anchorage. Begich has been handed the race on a silver platter and will probably win it, but he'll be vulnerable in six years, to put it mildly.