Via TPM, we learn that Roy Blunt has  gotten a little post-Scott Brown bump: he now polls 49% to Carnahan’s 43%.  Will Carnahan’s damage control take her down the McCaskill path, or will she stand up and fight for the Democratic base?

I share the opinion of the Erstwhile Conservative that Ed Rendell puts the case for doing the latter as well as anyone I have heard over the last two days:

It’s too late for McCaskill; we can only hope Carnahan listens to the stand-up branch of the party.