Slightly more people found Obama riskier (though it’s within the margin of error):

In the poll, conducted July 27-29, 57 percent say Obama would be a risky choice, while 54 percent say the same of McCain.

I think the people are right about this, they are both risky and I’m not surprised that people are wary of both. Though, I think that McCain is less risky since he’s not a Marxist.