Hillary Clinton led the field for the Democratic nomination from the beginning of the campaign in early 2015 on her road to becoming the party’s nominee.
Donald Trump’s rise to become the Republican Party’s presidential nominee followed a lengthy primary campaign.
Explore how the opinions of blacks and whites vary by age, education, gender and party identification in key questions from our report.
In Pew Research Center polling in 2001, Americans opposed same-sex marriage by a margin of 57% to 35%. Since then, support for same-sex marriage has steadily grown. Based on polling in 2016, a majority of Americans (55%) support same-sex marriage, compared with 37% who oppose it. See the latest data on same-sex marriage.
Map showing the share of adults in the middle-income tier across 229 United States metro areas
A Pew Research Center analysis of government data shows that after more than four decades of serving as the nation's economic majority, the U.S. middle class is now matched in size by those in the economic tiers above and below it.
Two years ago, Pew Research Center found that Republicans and Democrats were more divided along ideological lines than at any point in the previous two decades.
There were 55.3 million Hispanics in the United States in 2014, comprising 17.3% of the total U.S. population.
Gender gap in weekly worship service attendance differs between Muslim-majority and Christian-majority countries.