In late August, 80 Republican Congressmen signed a letter asking Boehner to defund Obamacare by threatening to shut down the government. They were dubbed the “suicide caucus” by Krauthammer. Lizza mapped their districts:
[S]uicide-caucus members live in places where the national election results seem like an anomaly. Obama defeated Romney by four points nationally. But in the eighty suicide-caucus districts, Obama lost to Romney by an average of twenty-three points. The Republican members themselves did even better. In these eighty districts, the average margin of victory for the Republican candidate was thirty-four points.
In short, these eighty members represent an America where the population is getting whiter, where there are few major cities, where Obama lost the last election in a landslide, and where the Republican Party is becoming more dominant and more popular. Meanwhile, in national politics, each of these trends is actually reversed.