Brit Hume has some blunt advice for conservative Republicans: lay off McCain if you don't want a Dem president. At the very end of today's Fox News Sunday panel segment, Weekly Standard editor Bill Kristol was first to make a point along similar lines. BILL KRISTOL: I'm more conservative than John McCain but I think it would be a mistake for him to just make himself into an orthodox conservative in this election. The reason he is a stronger candidate than a lot of other Republicans would be is that he is a little bit heterodox. He's got his own...