Glenn Reynolds makes one of those smack-myself-in-the-forehead-because-it's-so-obvious-now-that-I've-read-it-that-I-can't-believe-I-didn't-figure-it-out-myself observations that keep me reading blogs when I should be working (or sleeping):
The more vulnerable he becomes, the easier it is for the Democratic leadership to keep him in line.
I knew the Dems place power far above principle, but I couldn't see why they'd want to keep someone around who makes them look so bad. Finally I understand.