The result is a crucial victory for Democrats in their push to retake the Senate majority, flipping a seat that Collins has held for nearly 30 years.

These charts show how various demographic groups voted in the midterm election. The data comes from a poll of tens of thousands of voters, conducted by the firm SSRS for a number of news outlets.

NPR's Scott Detrow speaks with former Arkansas Gov. Asa Hutchinson about Democratic victories in states typically considered Republican strongholds.

The victories in the House and Senate return Democrats to full control of Congress for the first time since 2023 and deepens the level of expected friction between them and President Trump.

Democrat Josh Turek has defeated Sen. Ashley Hinson in Iowa, according to a race call by the Associated Press.