One of the most influential superdelegates in the Democratic Party has indicated he will likely vote for Barack Obama -- even though he endorsed Hillary Clinton four months ago. Rep. John Lewis of Georgia began his career marching for civil rights in Georgia, and now he says that he has to represent his Georgia constituents rather than his personal feelings at the convention. Note, however, some of the rationalizations he offers for his change of heart: Representative John Lewis, an elder statesman from the civil rights era and one of Senator Hillary Rodham Clinton’s most prominent black supporters, said Thursday...