Largest delegate percentage reflects the largest number of delegate votes won by the former president on a ballot for the presidential nomination, out of the total number of delegate votes at the ...

Apportionment, or the process of determining the number of seats each state has in the U.S. House of Representatives, happens like clockwork at this point. Every 10 years, the Census Bureau counts how ...

When the new Congress comes into session in January, there will be more Black Republicans serving together on Capitol Hill than at any point since 1877. The number? Five. 1 For years, Republicans have ...

In the iconic skating film “Ice Castles,” Lexie — the main character who happens to be a top-notch figure skater — takes to the ice in a maroon jumpsuit and attempts a triple jump. It apparently was ...

Longtime readers of FiveThirtyEight are probably familiar with our pollster ratings: letter grades that we assign to pollsters based on their historical accuracy and transparency. Since 2008, we have ...

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 ...

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

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, ...

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 ...

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 ...

One of the ways that our forecast model seeks to make polling data more robust is by calculating and adjusting for “house effects,” which are systematic tendencies for polling firms to favor either ...

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 ...