Mushball Polls, Mushball Candidates?

At the Plank, Nate Silver draws our attention to those gap-closing Presidential polls. Bad news for Obama? Well it ain’t good news. But the natural question to ask here is how deep McCain’s support runs. Even if McCain can muster a lot of shallow support — “a lot” meaning over 55% of the vote — against Obama’s perhaps smaller but far more dedicated and convinced core, a victory on Election Day for the GOP isn’t necessarily a victory during a first McCain term. You all remember what happened to Bill “the presidency is still relevant” Clinton, don’t you? No, McCain has no Hillary to drive his numbers down. But neither does he have a Monica to drive them back up.