“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 ...

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

In tennis, the two players switch sides of the court after every odd game — to even out any advantages that one player might have due to the sun. Democracy is no tennis game, but it is nevertheless a ...

There has been a lot of buzz recently about the wave of women running for office in 2018. It’s record-breaking. But that’s not quite right. At least, it’s too broad. There are a lot of Democratic ...

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 ...

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 ...

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 ...

Vote margin calculated based on the two-party vote, which uses just the Democratic and Republican vote totals. Together, the share of the statewide vote and the benchmark margins produce a 50-50 tie, ...

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 ...

With the 2018 midterm elections approaching, we’ve updated FiveThirtyEight’s pollster ratings for the first time since the 2016 presidential primaries. Based on how the media portrayed the polls after ...

The greatest drivers in the world are assembling in Monte Carlo this weekend for Formula One’s flagship race, the Monaco Grand Prix. So we thought it was the right time to dive into the history of ...

Congress is in full-on chaos mode right now, with the future of infrastructure, government funding, the debt limit and voting rights all uncertain. But at the heart of the chaos is a core disagreement ...