See the latest Pew Research Center data on U.S. political party affiliation, including trends in voting and elections.

U.S. PoliticsMay 20, 2014

More Republicans than Democrats see military service as asset for presidential candidates

As the 2016 presidential campaign ramps up, Republicans and Democrats have different wish lists when it comes to what traits they want in a candidate.

U.S. PoliticsMarch 30, 2014

Democrats Face Challenges in This Year’s Midterm Elections

While Democrats are more popular than the GOP among the general public, the party faces a number of challenges in November, writes Andrew Kohut in the Wall Street Journal.

U.S. PoliticsFebruary 28, 2014

Are the Democrats getting too liberal?

Andrew Kohut writes in the Washington Post that polarization is not a one-way street. While Republicans have become more conservative, Democrats have grown more liberal.

U.S. PoliticsFebruary 24, 2014

Just 28% of Republicans believe GOP advocates its principles well

A minority of Republicans believe that their party is doing a good job in standing up for its traditional positions of smaller government, tax-cutting and conservative social values.

ReligionJanuary 3, 2014

Republicans’ views on evolution

Significantly fewer Republicans believe in evolution than did so four years ago, setting them apart from Democrats and independents. But behind this finding is a puzzle: If the views of the overall public have remained steady, and there has been little change among people of other political affiliations, how do you account for the Republican numbers? An explainer.

November 25, 2013

Study: Having daughters makes parents more likely to be Republican

Two sociologists have found that parents who have daughters are more inclined to support the GOP and turn a cold shoulder to Democrats.

U.S. PoliticsNovember 21, 2013

JFK torchbearers now vote more Republican

Pew Research has tracked vote preference among different age cohorts in the past several presidential and midterm elections and looked at who was president when each cohort turned 18. By looking at likely voters from our pre-election surveys, we can see how each age cohort voted relative to the national average.

Fact TankAugust 12, 2013

Fewer GOP voters agree with the Tea Party than in 2010

About four-in-ten Republican voters say they agree with the Tea Party movement, down from its height in 2010.

U.S. PoliticsAugust 7, 2013

Tea Party Republicans exert stronger influence in GOP primaries

There is a 17-point gap between the percentage of Tea Party Republicans (62%) and non-Tea Party Republicans (45%) who say they always vote in primary elections.

Fact TankJuly 22, 2013

Are unauthorized immigrants overwhelmingly Democrats?

Will there be “an electoral bonanza for Democrats” if the nation’s estimated 11.1 million unauthorized immigrants are eventually granted the right to vote? The data provide some insights.