Every person who talks and writes about politics gets stuff wrong. I’ve gotten my fair share wrong. But what I think I got most wrong in Campaign 2012 was the damage Mitt Romney’s “47%” remark would do to him. It may seem obvious, but bear with me. Mitt Romney was talking off the cuff to a supposedly off the record group of donors and muddled several data points together, ultimately telling the tale of the 47% who won’t vote for him for any reason. He was referencing the 47% who don’t pay taxes and interwove it with a 47% of...