The Trump camp claims that polls are rigged in favor of Hillary Clinton. Our friends at FiveThirtyEight explain why that theory misunderstands how polling works. 

FiveThirtyEight's Nate Silver crunched the numbers and found Trump's success was extremely unlikely. He wasn't wrong, and yet here we are. So why is this election so unpredictable?

Primary voters in twelve states (and American Samoa) head to the polls, and media expectations are high. The experts at FiveThirtyEight decode how the candidates can meet them.

A "Dean Scream" is shorthand for a campaign disaster. But did Howard Dean's 2004 shriek even happen the way it's remembered? And did it really doom him? FiveThirtyEight investigates.

We return to our collaboration with FiveThirtyEight to look at the ongoing question of Bernie Sanders and the media.

How can you tell important polling headlines from bad ones? Our partnership with FiveThirtyEight continues with this look at how to interpret polling data as the primaries get closer.

Nate Silver of FiveThirtyEight explains why Donald Trump's position in the polls isn't everything he makes it out to be, and how polls can also obscure the truth.

Do candidates get more coverage because they're polling well, or do they poll well because they get more coverage? We're teaming up with FiveThirtyEight to search for an answer.