(NEWSER) - Barack Obama is wielding his clout to try to win the Summer Olympics for Chicago in 2016, which, if you follow the bouncing political ball, could be great news for Hillary Clinton or another lucky Democrat, writes Nate Silver of FiveThirtyEight.com. Here's the logic: The Olympics create a groundswell of patriotism that usually pays off for the president in office. In fact, three of four incumbents won re-election in a landslide when the US hosted the summer Games, notes Silver. More»