Conservatives shouldn’t fret about the politics of their nearly-presumptive nominee. Mitt Romney will most certainly govern as one of them. He’s guaranteed to — for the exact reason they think he won’t. If Romney really is the political animal his detractors on the right suspect him to be, he’ll shape his presidency with a single goal: Winning a second term. To do that, he will need to make sure there is no running room on his right for someone to launch a primary challenge.