For John, BLUF: People with passion tend to stay better informed. Nothing to see here; just move along.
The Instapundit sends us to the website of the Center for Individual Freedom, and this article, "Republicans More Informed Than Democrats, According to Pew Research".
The article does not provide a link to the PEW report, but I would guess it is this one.
The differences are generally not huge, but they suggest that condemnations of Republicans as ignorant voters is at best misleading and likely just ignorant.
Oh, and bonus from the CFIF article is a survey that found Tea Party folks better educated than those who don't attend Tea Parties.
Hat tip to the Instapundit.
Regards — Cliff