The RSLC Redistricting Majority Project – REDMAP: "On November 6, 2012, Barack Obama was reelected President of the United States by nearly a three-point margin, winning 332 electoral votes to Mitt Romney’s 206 while garnering nearly 3.5 million more votes. Democrats also celebrated victories in 69 percent of U.S. Senate elections, winning 23 of 33 contests. Farther down-ballot, aggregated numbers show voters pulled the lever for Republicans only 49 percent of the time in congressional races, suggesting that 2012 could have been a repeat of 2008, when voters gave control of the White House and both chambers of Congress to Democrats.
But, as we see today, that was not the case. Instead, Republicans enjoy a 33-seat margin in the U.S. House seated yesterday in the 113th Congress, having endured Democratic successes atop the ticket and over one million more votes cast for Democratic House candidates than Republicans. The only analogous election in recent political history in which this aberration has taken place was immediately after reapportionment in 1972, when Democrats held a 50 seat majority in the U.S. House of Representatives while losing the presidency and the popular congressional vote by 2.6 million votes.