Gallup, with the latest in mind-boggling apathy from the center-left:
Republicans (42%) are much more engaged than Democrats (27%) in the election at this point....
If there is no significant narrowing of the Republican-Democratic thought gap between now and Election Day, the Republican advantage in turnout could surpass that on Election Day 2010.
One would think that Democratic disgust with Republicans' colossal misrule would by now be vengeful, determined, and even feverish. But it seems that one non-candidate's low approval rating--carved point by point by the aforementioned misrulers--is what influences their "engagement" instead.
You have to hand it to tea partiers; they understand the power of the vote. Democrats either don't, or they just don't care--and that I find even more disgusting than Republicans' misrule.