As some like to say, the 2012 presidential campaign began the day after the 2010 midterm elections. And with the bulk of the action on the Republican side as contenders start lining up to challenger President Obama, it's not too soon to start speculating about who's most likely going to be at the top of the GOP ticket. Republican strategist Mike Murphy has worked on the campaigns of Sen. John McCain, former Florida Gov. Jeb Bush, former Massachusetts Gov. Mitt Romney and others. He tells Morning Edition guest host Linda Wertheimer that Romney and current Indiana Gov. Mitch Daniels now...