“There's no evidence from decades of Pew Research surveys that public opinion, in the aggregate, is more extreme now than in the past. But what has changed -- and pretty dramatically -- is the growing tendency of people to sort themselves into political parties based on their ideological differences.” PoliticsNewsResearchIdeologyVotingPolitical PartiesPublic OpinionSegregationAmerican PoliticsAmerican CultureExtremismPartisansFactionsPublic PolicyAmericansPartisanshipCurrent EventsPolarizationIdeologuesCategorizationCurrent AffairsIdeologiesPolitical BeliefsChanging TimesU S PoliticsVoter BehaviorFactionalismSelf Segregation Book:The Next America: Boomers, Millennials, and the Looming Generational Showdown Source: The Next America: Boomers, Millennials, and the Looming Generational Showdown