You contended that a terrorist attack on American soil would be bad for McCain. The most current polls we have on the issue suggest that's probably not the case. The fact that said polls don't say what you want to hear isn't particularly relevant.

That would be a side that doesn't currently exist at the national level. I have heard absolutely nothing from Obama that would even hint at a desire to reduce American involvement in the Mid-East. Obama as President would employ different tactics than Bush in foreign policy (so would McCain, for that matter), but American grand strategy isn't going to change no matter who's in office. The foreign policy Obama would be likely to pursue would be different from Bush's foreign policy in terms of tone; but anyone expecting a difference in terms of substance is going to be sorely dissapointed.