Lieberman is the PERFECT Exhibit A for the Dems. Here is the guy who had the vice-presidency "stolen" from him by W. But unlike Gore, he doesn't piss and moan and scream about it. He gets on with his job, and takes principled stands--you know, the kind everyone always says they want politicians to take. Do the Dems listen to his point of view and, even if they ultimately don't follow his path, politely say "Hey, he's one of us, we have a big tent"?
Nope.
Do they use their anger of the "stolen election" to help put half their ticket in office?
Nope.
They HATE him. Because he doesn't think like they do.
I am not saying it's betrayal not to follow his positions which the majority of the party disagrees with. I'm saying he is hated by them for not following their script, when at worst he should merely be disagreed with.
The Republicans do the same with McCain.