According to a BBC article here, Obama seems to be the more popular one (not that I'm implying this is a popularity contest - even if it does end up being one).

The thing I particular don't like about McCain is his propensity to being nasty. As if that's not enough, he continues to be nasty even though there's ample evidence to suggest it isn't working the way he intended it to. If he doesn't listen to whats happening around him, or deliberately chooses to ignore him, he's already exposed a possibly critical weakness.