voters are centrists; 16% are libertarians; 14% are authoritarians; 13% liberal; 7% are conservative; and, 17% border one or more categories. The margin of sampling error is +/- 3 percentage points with a 95% level of confidence. According to e-mails collected by the quiz's advocates, it has been used in 420 schools in the United States. The online content associated with several textbooks is also claimed to feature the Quiz. See also Political spectrum References American political websites Libertarian publications Political science theories Political spectrum