Michelle Obama says she wants nothing to do with politics now, but oddsmakers still say she’s got the best chance of any Democrat of winning the White House in four years. Bovada, an online gambling site, says the odds of Mrs. Obama winning are 12-to-1. The next-best Democrats, Sen. Tim Kaine and Elizabeth Warren, get odds of 14-to-1. By contrast three Republicans have higher odds: President-elect Donald Trump is a 2-to-1 bet to repeat, while Vice President-elect Mike Pence and House Speaker Paul D. Ryan are each given 10-to-1 odds.