CAMBRIDGE, MASS.—Really, Ron Paul and Mitt Romney did not have an alliance during the 2012 Republican presidential primaries. That was the word from both camps last week at a campaign 2012 postmortem at the Institute of Politics at Harvard's Kennedy School of Government.

"Strategically we were never in a place where we were competing with Mitt Romney for essentially establishment votes," explained Paul senior adviser Trygve Olson. He noted that while Paul rarely attacked Romney in debates or in paid media, they fundraised off of Romney's entrance into the race (targeting him as the establishment candidate), and "we had lots of pieces of mail that drew contrasts" with Romney. In the end, though, Paul and Romney were rarely competing for the same slices of the Republican electorate. "Strategically it was more important to draw contrasts with Rick Perry when he got in the race because he was taking Tea Party voters from him in Iowa," Olson said.