I don’t think Newt really has any choice but to stay positive.  Deep down I think it’s what people want, and in any event, he doesn’t have the money to flood the airwaves in Iowa that way Paul and Romney’s SuperPAC are doing.

My worry? Positive may be what people want, but negative wins, and we will not see until the general election how low Romney’s numbers can go until someone unleashes on him the level of attack being unleashed on Newt.

Update: Rudy goes where no one — other than Huntsman in NH — has dared to go: