In the world of presidential politics, 2016 actually isn’t that far away, especially given how much time and effort it takes to mount a serious campaign. Months before the 2012 votes were counted, speculation had started over who might run in four years – fueled by no less a figure than former President Bill Clinton. He has suggested many times that his wife, soon-to-be-ex-Secretary of State Hillary Rodham Clinton, might change her mind about not running once she’s had a break. Here are some of the other possible contenders.(Updated Dec. 11, 2012)