If McCain wins, would I be justified in leaving the country?

I know a lot of people blow a lot of hot air about “moving to Canada” or something similar, but I am a dual US/EU citizen, so moving really wouldn’t be a problem. On the one hand, I don’t want to live in a country lead by McCain (and likely Palin, as he’ll probably die a year or so into office). On the other hand, I feel that leaving would be an abandonment of the country – running away from its problems rather than trying to fix them.