As an Obama supporter, I am disappointed by the results in Pennsylvania. But unlike many others, I don’t think Clinton’s campaign was in any way surprising or out of line with its vitriol. Politics is indeed a contact sport, not for the faint or fuzzy of heart. I watched Hillary Clinton in an interview with Ann Curry the other night. And Clinton said, point blank, “I have to win.” That’s clarity. She did not say she has to make the country better, she did not say she wanted to inspire …