The 538 team discusses how polls have underestimated Democratic and Republican support in the past and how unpredictable the direction of polling error can be.

Our second deep dive into polling and other data in the seven key swing states.

538's Galen Druke and Nathaniel Rakich talk about the role polling can have in a democracy, from measuring issues voters consider important to providing insight into presidential elections.

The 538 team discusses what you should know about the margin of error of national and state polls.

But Democratic women could expand their ranks this year after a strong showing.

Test your knowledge of what the public thinks about Trump's policies.

But a normal polling error could also result in one candidate winning easily.

The 538 team discusses what our new polling averages say in the states that will decide the Senate majority.

538's Galen Druke and Geoffrey Skelley talk about the Electoral College advantage in past elections and how it could play out in 2024.

The 538 team discusses whether early voting data is a good indicator of who will win the 2024 presidential election.

538 has released Senate polling averages for the general election.

Swing-district Republicans downplayed abortion in the 2024 primaries.

538's Galen Druke, University of Maryland’s Chryl Laird and Pew Research Center’s Kiana Cox discuss Kamala Harris' approach to talking about her race and gender during the 2024 presidential campaign.

538's Galen Druke and the University of Maryland’s Chryl Laird talk about whether or not Black voters who support Trump are representative of a breakdown in this voting block.

University of Maryland’s Chryl Laird and Pew Research Center’s Kiana Cox discuss data on "linked fate" across interracial voters and voters of different political ideologies.

Harris has a challenge, and an opportunity, to define her stance on the war.

Our first deep dive into polling and other data in the seven key swing states.

But progressive candidates still won most of the open races they ran in.

538's Galen Druke and The New York Times's Ruth Igielnik discuss how young women are more liberal and what that means for the future electorate.

The New York Times's Ruth Igielnik discusses how Taylor Swift’s endorsement of Kamala Harris has affected voter registration and the presidential race.

538's Galen Druke and The New York Times's Ruth Igielnik talk about the percentage of Americans open to a variety of manifestations, from protesting to more serious violence.

ABC News Chief Washington Correspondent Jonathan Karl explains how to make your predictions on the 2024 presidential race.

She's up to a 61-in-100 chance of winning, per the 538 forecast.

But they didn't splash cash to oppose all high-profile progressives.

Not all polls are created equal. Here's 538's guide to interpreting them.

The former president has taken over the traditional GOP endorsement apparatus.

Swift’s fans largely lean Democratic, but her support could boost engagement.

But it’s unclear how much, or whether, it will shift the race.

The 538 crew discusses how the issue of reproductive rights played a bigger role in the Harris-Trump debate compared to the previous debate with Trump and Biden.

ABC News politics reporter Brittany Shepherd shares insight into what surrogates said about the candidates' performance in the spin room after the debate.

538's Galen Druke and Nathaniel Rakich discuss whether Kamala Harris was able to define herself to Americans during the debate.

The 538 team discusses what polling reveals about young, older and first-time voters ahead of the November election.

538's Galen Druke and Geoffrey Skelley discuss the role economic sentiment could play in the 2024 presidential election.

Both states pick their next governors this year.

Americans think Harris will win, but she has ground to make up on key issues.

Pick the winner in a state to see how 538's presidential forecast would change.

538's Galen Druke and Nathaniel Rakich discuss the importance of Kamala Harris’s first presidential debate.

538's Galen Druke speaks with Ruth Igielnik of The New York Times about potential sources of error in polling.

538's Galen Druke and Nathaniel Rakich talk with Ruth Igielnik of The New York Times about what issues are important to voters and which ones will become hot topics during election season.

Ruth Igielnik of The New York Times talks about how Kamala Harris is performing among swing states and demographic groups.

538's Galen Druke speaks with Ruth Igielnik of The New York Times about how voter enthusiasm has shifted since Kamala Harris became the Democratic nominee.

538's Galen Druke and Jeanna Smialek from The New York Times talk about potential economic changes that could impact how people vote in the 2024 presidential election.

Jeanna Smialek from The New York Times discusses how Democrats and Republicans are tackling issues like taxes and more on the campaign trail.

538's Galen Druke speaks with Jeanna Smialek from The New York Times about economic sentiment data leading up to the 2024 presidential election.