Albeit modestly so.
The 2014 GSS data are out. Converting wordsum results to IQ scores with an average wordsum of 6.11 and a standard deviation of 1.83 wordsum points, the mean IQ of 2012 presidential election voters by who they voted for (n = 988):
SWPLs can take some pride in how things look if only white voters are considered:
Implicit pride, of course. Pointing out that NAMs depress the average IQ scores of Democrats is only something the wrong kind of white people would ever do. SWPLs are too intelligent to do anything as crass and uncouth as that!
GSS variables used: RACECEN1(1), PRES12(1-3), WORDSUM, BORN(1)