The idea of a Barack Obama-Hillary Clinton "unity ticket" has been floated quite a bit the last few days. But, seriously, is the idea any good? We asked a few friends of the magazine to weigh in. Here's Mark Schmitt, senior fellow at the New America Foundation. There are fights within the Democratic Party that reflect deep structural and ideological rifts that, in turn, are embodied by individual candidates: Eugene McCarthy and Bobby Kennedy vs. Hubert Humphrey in 1968, George McGovern vs. everyone else in 1972, Ted Kennedy vs. Jimmy Carter in 1980.