SurveyUSA, whose polling has been the most realistic so far this year - has done state by state polling of Clinton and Obama verus McCain. They both win, but what I want to note is this Clinton argument that if Obama didn't win Ohio in the primary, he can't in the general (the problem with the Clinton camp's talking point is that while sure no Dem has ever won the election without winning Ohio in the primary, rarely if ever has the Ohio primary mattered. It's one of those historical things that defies logic - for instance, the tallest man usually wins the election, except John Kerry is taller than Bush.). Except, if he is the candidate, are all of those people who voted for Clinton going to vote for McCain? Not enough to make a significant dent. This poll bears that out with both of them up by double digits in Ohio over McCain.