It's two weeks before the 2010 elections. Which means now's a fine time to start obsessing about the 2012 campaign. The next presidential race will unofficially begin on No. 3 -- the day after the midterm elections. It's possible we may not know the outcome of all the critical House and Senate races by then, and these races could determine which party controls the House and Senate. But once most of the 2010 votes are counted, the politerati will quickly pivot toward the next big thing. So let me get an early jump and tell you this: watch out for...