Remember when pundits accused the GOP of abandoning its big tent—the one big enough to include a broad diversity of views? You can kiss that meme goodbye. This year's presidential candidates span the political spectrum. They are both pro-abortion and anti-abortion. They have both embraced and opposed bans on assault weapons. They have both accepted and rejected the idea of human-induced climate change, both promoted and derided a government takeover of health care, supported both amnesty for illegal aliens and building a giant wall on the border. And that's just Mitt Romney, writes A. Barton Hinkle. We haven't even touched on the rest of the field yet.