I'd say the Right would, but I'm biased. For one thing, Lefties seem awfully Romantic(which almost by definition is anti-reason). The Left and Romanticism are nearly the same thing..I mean, hundreds of years ago they said Socialism was the political arm of Romanticism, and they were always "fellow travelers". Even modern lefties express deeply Romantic ways of thinking, and I consider that a SERIOUS negative checkmark against the Left. They're quite emotional, and don't think about systems so much(like economics). Look at Occupiers blaming problems on other people and expressing a "BUT I WANT IT!!! NOW!!!" brat mentality. Spoiled brats. When reality finally told them no, they didn't know how to handle it. They'd never heard that word before. As parents raise even wussier children, expect the ranks of the unwashed Occupiers to grow.
Also, one of the studies that suggested Leftists had higher IQs, the one that came out within the last two years? Turns out they weren't judging on political persuasion, the study was skewed. It seems to be politics should be based on actual political positions, but Leftists don't like that for some freakish reason. The study I'm referring to stated that people more likely to give generally had higher IQs, and concluded those people were Leftists. Problem is, religious people are usually the most charitable, and religious people lean....Republican. In fact, a book called "Who Really Cares?" by Arthur Brooks is chock full of statistics on charitable giving...and even tolerance of others. Turns out for all their talk, Leftists aren't on the GIVING end of hand outs, it's religious conservatives that are at the head of the pack. This may seem off-subject, but given that the study deceptively used charitable giving as a means of showing Leftists had a higher IQ..it seems the study's conclusions should have been the reverse. But that's what happens when people collecting data fall prey to propaganda and "conventional wisdom" on what constitutes "right" and "left". So the study really shows conservatives have the higher IQ. If one puts faith in the study at all. I have a feeling if you look closely at these sort of studies(at how data was collected, assumptions made, etc.) you'll find they're really dodgy, whatever leftists say about it.
Keep in mind years ago, it was said Kerry was smarter than Bush..but a study that used Bush/Kerry's military scores to extrapolate an IQ said Bush probably had the higher IQ.
Although I'm not sure this is partisan..for one thing, people pick up politics from regions/families just like anything else, and some smart people have said stupid things(usually authorities who expressed opinions outside of their fields, and said opinions seemed amateurish). I've met Leftists and Right wingers who had similar personal qualities in how they formed judgments, what they thought was a GOOD argument, etc. If you watch closely, sometimes you can hear them talk similarly.