It's the President, Stupid!

RealClearPolitics' Sean Trende does an exhaustive analysis of the cross-tabs of racial, age, and party demographics of 2014 voters and learns something that confounds much post-election punditry.

No matter how you slice it, demographic changes in the midterm electorate account for a relatively small portion of the Democrats’ problems in 2014.  The real difference between 2012 and 2014 isn’t changes in the demographic makeup of the electorate.  It is changes in the way that demographic groups voted. This, in turn, has everything to do with the president’s job approval rating.

Which, as we all know, sucks.