WASHINGTON — Political polarization in America has broken out of the voting booth.

A new survey from the Pew Research Center finds Americans are divided by ideology and partisanship not only when they cast ballots, but also in choosing where to live, where to get their news and with whom to associate.

And peaceful coexistence is increasingly difficult.

According to the poll, the share of Americans who hold across-the-board conservative or liberal views has doubled in the last decade, from 10 percent in 2004 to 21 percent today. Only 39 percent of Americans have an even mix of liberal and conservative positions, down from 49 percent 10 years ago.

The numbers of ideological purists are larger among the politically engaged than the general public, suggesting the ideological stalemates that have become more common in Washington and statehouses around the country are likely to continue. A third of those who say they regularly vote in primaries have all-or-nothing ideological views, as do 41 percent who say they have donated money to a campaign.