Does Paul Ryan help or hurt Mitt Romney's chances? Charles Krauthammer says he's a big plus assuming the campaign does an effective job of protecting against MediScare - something the Kraut says shouldn't be hard.

He changes the subject to ideas and plans which makes Obama have to discuss his record, which is a bad one, and his plans for a second term, which are none... I think he brings youth and energy which is something Obama had in 2008 and he has entirely spent...