Sigh. Not much. But does that matter? At this time
, Obama is far ahead in the state polls. If new ones come out, that could change.
But I doubt it. If you go to pollster.com, you will see that they break down the 'lead' states into two categories: strong leads and 'leans.' Obama's number of states with 'strong' leads is far, far higher then McCain - 231 electoral votes to 115 electoral votes. Those states are not going to change b/c of the convention, on either side.
As for the 'leans,' its' the opposite: 29 O to 64 McC. These could
change but it would have to be a big change in order to make them flip to McCain.
At this point it's entirely fair to say, even before we see the post-convention polling, that McCain is still WAY BEHIND in electoral votes. He literally has to win every state he's leading in right now, plus EVERY CONTESTED STATE in order to win the election. That's a tough row to hoe.