Ramesh pointed out long ago that everyone in the rest of the field had reason to gun for Romney. Now, finally, at this late hour in Iowa, Romney has a rival candidate with whom he has congruent interests. Romney wants Huckabee to come down so he can win; Thompson wants Huckabee to come down because he’s probably getting a lot of his voters. Romney wants McCain to finish fourth so McCain doesn’t get favorable coverage out of Iowa; Thompson wants McCain to finish fourth so he can finish third. Not that this alliance of convenience matters much at this point, but I find it mildly interesting.