McCain looked pretty awkward when he tried to articulate the “Joe the Plumber” story, but he won the exchange on taxes, which has arguably been the biggest battle in these debates.  It’s not enough to point out that Obama would raise taxes on businesses, as McCain has several times already–he needed to explain to Americans why this would be terrible for the economy right now.  For the first time, he talked about how America’s corporate taxes are already too high, and how this creates an exodus of jobs to other countries.