I just want to follow up on Chris's post about Joe Lieberman. However 'bipartisan' the Beltway press wants to portray Lieberman's endorsement of McCain, the audience right now that McCain and Lieberman care about is Republican primary voters. That means that they must think Lieberman has appeal to Republican primary voters, and given his strong support from Republicans in Connecticut and constant praise from George Bush and Dick Cheney, Lieberman probably does.
But if Lieberman really had cross-party appeal, he'd endorse the Republican nominee during the Democratic or Republican conventions or before the general election, when general election voters are making up their mind. It's telling he chooses his moment to maximize appeal to Republican primary voters and minimize it to anyone who isn't.