"If we're talking about big tent thinking in the Republican Party, I think we're all going to unite under a consistent economic theory. That's where our unity is, and that's what unites us," Mr. Hutchinson says. "We get divided generationally and in other ways — libertarians versus more traditional social conservatives, for example — and we've got to provide some flexibility there. But we don't need to have quite so many litmus tests. We need to have our big picture focused on economic issues."