Drilling is, of course, the best domestic issue Republicans and McCain have going for them. Can you imagine what the debate would look like if McCain hadn’t changed his position on off-shore drilling a few weeks ago? Now, with the Democrats and Obama beginning to buckle, it’s no time to let up on the pressure, as we argue here. McCain probably needs to go farther and support drilling in ANWR. It will augment his “all of the above” position; it will prompt howls from the left and environmentalists–which is a good thing given how this debate is shaping up; and it will keep him in a place on the issue where Obama can’t go, or can go only with great difficulty. How can McCain make this change? That’s a tougher question. He’s going to have to live down the “Grand Canyon” nonsense, but maybe he can find a way to get some cover (arguing for drilling on the one hand, but expanding the size of ANWR on the other?). Or maybe he can just go the straight-talk route, “My friends, I’ve looked at this more closely in light of $4-a-gallon gas, and I realize I was wrong. But I will swallow my pride and gladly admit error if it means helping lift the burden of high energy costs on American consumers.” Or something like that.