“The Party Decides,” the 2008 book by the political scientists Marty Cohen, David Karol, Hans Noel and John Zaller, has probably been both the most-cited and the most-maligned book of this election ...

Includes polls of special elections and runoffs. Excludes polls from pollsters that are banned by FiveThirtyEight, New Hampshire primary polls taken before the Iowa caucuses and other states’ primary ...

On Friday at noon, a Category 5 political cyclone that few journalists saw coming will deposit Donald Trump atop the Capitol Building, where he’ll be sworn in as the 45th president of the United ...

The Voting Rights Act of 1965 was supposed to settle the debate over race, redistricting and representation. Instead, it started new ones. Since the act prohibits states from reducing a minority group ...

Michael Thomas of the New Orleans Saints can create separation from his defenders all over the field. To try to capture the results of this game of cat and mouse between receiver and defender, we used ...

If you follow the headlines, your confidence in science may have taken a hit lately. Peer review? More like self-review. An investigation in November uncovered a scam in which researchers were ...

Editor’s note: This is the first in a series of six pieces that show how professional sports owners in America contribute to political campaigns, why they spend millions in the space and what that ...

If you’re one of the approximately 320 million Americans who don’t live in New York City, it might seem like its Democratic mayoral primary has gotten an outsized amount of media coverage. But even I, ...

Sometimes statistical analysis is tricky, and sometimes a finding just jumps off the page. Here’s one example of the latter.

Kenny Michelena is, by just about any measure, a tough guy. He was born and raised on a ranch in rural northwestern Wyoming and remembers that after class in elementary school, the bus driver would ...

I don’t have a particularly strong take on how the death of Ruth Bader Ginsburg will affect either the presidential election or the race for control of the U.S. Senate. And I’d encourage you to avoid ...

The U.S. House of Representatives isn’t the only chamber whose district lines are being redrawn to reflect the 2020 census. State-legislative chambers are being redistricted too — and as we’ve written ...