The new American segregation

Some have blamed the rise of right-wing media for the polarization of America. Others point to the gerrymandered, hyper-partisan districts that House members now draw each decade to protect their incumbency. But according to journalist Bill Bishop, who just published "The Big Sort: Why the Clustering of Like-Minded America Is Tearing Us Apart," there's something much more profound and far-reaching going on. Given all the media choices they have, Americans are increasingly segregating into "gated" communications communities, choosing to read and hear only the things that bolster their worldview. More important, Bishop (along with sociologist and statistician Robert G. Cushing) found that Americans over the last 30 years also are literally, physically segregating themselves by ideology -- they have begun to migrate to certain cities, counties and neighborhoods so they can spend their daily lives around people who live and think just like they do. This self-selected migration might not be consciously political, but it has real-life political consequences, the worst of which is an ideological inbreeding that is creating a dangerous distance between Americans who hold opposing worldviews.

As many of the 10 million Americans who move from one county to another each year chose to live in narrowly defined "communities of interest," the nation's counties became more politically segregated and increasingly less politically competitive. In 1976, only 38% of counties had a partisan spread larger than 20 percentage points; in 2004's astonishingly close election, more than 60% of U.S. counties saw landslides.

And homogeneity breeds more homogeneity. Political minorities in landslide counties tend to vote less and even withdraw from other forms of civic life, while political majorities vote more. In any given lopsided locale, the triumphant majority opinion hardens -- the blues become bluer and the reds redder -- and cross-party communication stops. And when communication stops, each side begins to view the other as more extreme. According to one study, fewer than 25% of Americans have regular discussions with people they disagree with politically. The more educated Americans become, the greater the distance. Americans who hold graduate degrees live the most homogenous political lives.

What this all means, Bishop argues, is that as Americans separate themselves into ever-narrower communities, our votes are becoming "more of an affirmation of the group than an expression of a civic opinion." As we cloister ourselves in like-minded enclaves, we're finding it harder to reach a national consensus.

Once upon a time, politicians were expected to reconcile society's opposing interests. Today, our little groups expect them simply to carry our water. For all our vaunted belief in individualism and democratic ideals, we are no longer adhering to either. Instead, we have reorganized our country into a confederation of little reservations, and together we vote, arm in arm, with members of our little tribes.