I would quite like to see an Obama-Gingrich election. It's not that Mr Gingrich would be the best president. But watching Mitt Romney pivot to the centre with the smoothness of a consultant flipping to his next slide, a manoeuvre we can all expect him to execute the minute he wraps up the nomination, will be depressingly predictable. The perception that he will say whatever he feels he must to become president is not founded on sand. Mr Gingrich, by contrast, can almost certainly be counted on to be the same Mr Gingrich we've seen in the primaries. Say what you like about the man, but he has ideas, says arresting things, and most of all, would make the clearest possible contrast with Barack Obama in the general election.