bouncing in the swing states

I'm trying not to pay too much attention to polls at this early stage of the general, but these ones are interesting: they show Obama's national lead replicated, to lesser or greater degrees, in the big swing states of Ohio, Pennsylvania, and Florida.

Only a few weeks ago polls were showing Obama behind McCain in head-to-head match-ups in these states, (in contrast to Clinton's hypothetical leads over McCain). But now that the Democratic primary is out of the way, Obama is ahead. Another sign that Democrats are more likely to unify behind their candidate than many had suspected.