Two thoughts on the Democratic debate tonight.

Number one, Hillary Clinton held her own, and then maybe more so. She relentlessly came back again and again to attacking the Republicans. With an assist from Bernie Sanders, she disposed for the moment of the email controversy — for the evening. If her intention was to convince Democratic voters that she is a strong general election candidate — stronger than most current polls suggest — she probably succeeded. One possible result of this debate was a groundswell of Democrats saying Joe Biden must enter the race to save the party’s chances. Recent polling makes that case. Clinton’s performance severely undercut it. Chances of Joe Biden entering the race? A lot less than they were 24 hours ago.