Here's another sign that Democrats are in disarray: Today on NBC's "Meet the Press," Sen. Russ Feingold (D.-Wis.) refused to endorse Senate colleague Joe Lieberman in his Democratic primary race against Ned Lamont in Connecticut.

RUSSERT: Your colleague Joe Lieberman in Connecticut in a tough primary battle. If Senator Lieberman asks to you to come to Connecticut to campaign for him, will you?

SEN. FEINGOLD: I have a lot of admiration for Joe. He’s a fine guy. He helped me a great deal with campaign finance reform. I think Ned Lamont’s positions on the issues are much closer to mine on the critical issues. I think this is going to be something decided by the people of Connecticut. I'm not going to go up there, but I’ll tell you this, Tim, I will support the Democratic nominee, whoever that is.

RUSSERT: So if Lamont beats Lieberman, you're for Lamont?

SEN. FEINGOLD: That's correct.

RUSSERT: And you will not campaign for Lieberman if he asks you?

SEN. FEINGOLD: I am not getting involved in the primary. If Joe Lieberman wins the primary, I campaign for him. If Ned Lamont wins the primary, I campaign for him.

The Democratic Party never had an 11th Commandment, but it amazes me that Feingold would be so arrogant to take a swipe at a fellow senator and his party's vice presidential nominee just six years ago.

If this is the treatment Lieberman gets from his own Democratic colleagues, maybe it's not such a bad idea for the Republican Party to ask him to switch sides. The GOP could even make it a fair trade by offering Sen. Lincoln Chafee (R.-R.I.).