Ryan looks like the one person who could electrify the Republican electorate, appeal to independent voters, and sustain an argument against Obama that would make for a decisive election. ?Ryan is young, has young children, and has lots of reasons to wait. But one cant choose ones moments in politics. I can imagine a set of circumstances in which his budget proposal gets little traction against White House intransigence, and by the fall the political winds are such that entering the race makes so much sense that he has to do it. And increasingly he looks to me like the single best candidate the Republicans could field next year.