Noting that Obama's EC vote percentage was significantly higher than his popular vote percentage, Jonathan Bernstein wonders whether Democrats have a structural advantage in the Electoral College. Nate Silver finds reason to think so:
Two more presidential elections, 2016 and 2020, will be contested under the current Electoral College configuration, which gave Barack Obama a second term on Tuesday. This year’s results suggest that this could put Republicans at a structural disadvantage. Based on a preliminary analysis of the returns, Mitt Romney may have had to win the national popular vote by three percentage points on Tuesday to be assured of winning the Electoral College. The last Republican to accomplish that was George H.W. Bush, in 1988.