It’s been three months since the election, and I keep hearing the same lament from Democrats: We would have won a clean sweep last November–the presidency, the Senate and the House–if only it weren’t for gerrymandering.
There’s some logic to this. Democrats won about one-and-a-half million more votes in House races last fall than Republicans, and yet the GOP ended up with a 17-seat majority. This came just two years after Republicans used their 2010 midterm landslide to grab control of governorships and state legislatures in a host of big states, meaning that when it came time to draw new district lines for the 2012 elections–which the Constitution says has to be done every 10 years–the GOP was positioned to win a whole bunch of seats they’d have no business winning under a fair map. And isn’t that the essence of gerrymandering?
Well yes, it is. But no, it doesn’t actually explain why Republicans still run Congress–and why they’re likely to well into the future.
The real explanation has to do with how Americans have chosen to sort themselves out geographically. Democrats have traditionally been the party of urban America and Republicans the party of rural America, but the there’s never been as dramatic a relationship between where a person lives and how a person votes than there is today.
Start with the Democrats. President Obama’s victory was keyed by overwhelming majorities from (and overwhelming turnout by) a rising bloc of voters: Latinos, African-Americans, women (particularly single women), professionals with multiple degrees, milennials. A coalition of the ascendant, one pundit calls it. These voters helped deliver Obama a winning margin of nearly 5 million votes, but they’re overwhelmingly clustered in cities and metro areas. This was enough to give Obama win after win in key battleground states and to lift his party’s Senate candidates in the same states. But the House is a different story.








