Paultopia, political segregation and groupthink

This is disturbing:

Americans are increasingly forming like-minded clusters. Conservatives are choosing to live near other conservatives, and liberals near liberals.

A good way to measure this is to look at the country's changing electoral geography. In 1976 Jimmy Carter won the presidency with 50.1% of the popular vote. Though the race was close, some 26.8% of Americans were in “landslide counties” that year, where Mr Carter either won or lost by 20 percentage points or more.

The proportion of Americans who live in such landslide counties has nearly doubled since then. In the dead-heat election of 2000, it was 45.3%. When George Bush narrowly won re-election in 2004, it was a whopping 48.3%. As the playwright Arthur Miller put it that year: “How can the polls be neck and neck when I don't know one Bush supporter?” Clustering is how.

There is a danger in this. Studies suggest that when a group is ideologically homogeneous, its members tend to grow more extreme. Even clever, fair-minded people are not immune. Cass Sunstein and David Schkade, two academics, found that Republican-appointed judges vote more conservatively when sitting on a panel with other Republicans than when sitting with Democrats. Democratic judges become more liberal when on the bench with fellow Democrats.

Residential segregation is not the only force Balkanising American politics, frets Mr Bishop. Multiple cable channels allow viewers to watch only news that reinforces their prejudices. The internet offers an even finer filter. Websites such as conservativedates.com or democraticsingles.net help Americans find ideologically predictable mates.

And the home-schooling movement, which has grown rapidly in recent decades, shields more than 1m American children from almost any ideas their parents dislike. Melynda Wortendyke, a devout Christian who teaches all six of her children at her home in Virginia, says she took her eldest out of public kindergarten because she thought the standards there were low, but also because the kids were exposed to a book about lesbian mothers.

Oh well, what can you do...

Say, who wants to move to Civilibertignostica with me?