Today are the Iowa caucuses for the Democratic presidential primary. Since 1972, Iowans have been the first state to weigh in on the presidential nominees through a series of 1,600 precinct level caucuses aggregated into state-wide results. Winning or doing well is often seen as a way to position a candidate for coming primaries. But the bottom line is, since the caucuses have been in existence, only three winners have become president (Jimmy Carter 1976, George W Bush 2000, Barrack Obama 2008). Over the years, there have been 10 Democratic caucuses, and the winner has been the party nominee seven times; there have been eight Republican caucuses and the winner has become the nominee only three times. In 2008, Republican eventual nominee Jo...