The treatment of Leiberman by the Democrat Party was despicable in my opinion.
He disagreed with the party-line on a single issue and had the moral courage to stick with his convictions, so they go after him politically. Is there actually no room for disagreement with the party-line? Is it really all-or-nothing?
I've never heard of the Republican Party doing something like that. In fact, my own Representative is a Republican and voted against the surge -- he didn't think it was a good idea. There were no political repercussions -- the Party didn't withdraw their support and throw it behind a challenger for his seat.
You know, believe it or not, I self-identified for years with the Democrat Party -- and it's crap like their treatment of Leiberman and Zel Miller that drove me away.