When you take a look at the electoral calendar, the over the top welcome that New Jersey Chris Christie has given to Barack Obama the last couple of days starts to make sense. This is about Christie's re-election, and not Obama's campaign. If you remember, Christie won election in 2009. As such, he has to start his re-election campaign in 7 days effectively. Thus, in a state where Barack Obama is still relatively popular, it makes sense for Christie to start backing down from his hard anti-Obama rhetoric of the past couple of years. Moreover, a heavy influx of "Obama...