Rep. Ruben Gallego, a Democrat, has won another term representing Arizona's 7th Congressional District, beating Gary Swing.
With all precincts reporting, Gallego has 85.8 percent of the vote, followed by Swing with 14.2 percent.
Gallego has represented the district in the House since 2015.
Democrats have gained a majority in the House, with 235 seats in the next Congress. All of Arizona's House seats have been decided; one switched hands, going to Democrats.
The number of votes cast for Democrats in House races has increased 55.0 percent from the 2014 midterms, compared with an increase of 25.6 percent for Republicans.
The district went for Democrat Hillary Clinton in 2016 by a margin of 48.3 points. President Trump, a Republican, won Arizona by 3.5 points.
Data is from the Associated Press. This story may be updated if more information becomes available. It is powered by Heliograf, The Post's artificial intelligence system.