Mitt Romney, the perpetually questioned front-runner for the Republican presidential nomination, had a rough week. Three embarrassing losses to Rick Santorum in Tuesday’s non-binding contests led to questions about Romney’s conservative bona fides just in time for GOP activists, gathering at their annual Conservative Political Action Conference in Washington, to collectively grumble about it. But in two narrow, largely symbolic victories on Saturday, Romney reclaimed the headlines. Never mind the details. He was winning again.