Voters in Colorado’s four strongly Democratic congressional districts appeared to be sending their incumbents back to Washington on Tuesday, according to early, unofficial returns posted shortly after polls closed.

The state’s longest-serving member of Congress, U.S. Rep. Diana DeGette, a Denver Democrat, was heading to a 15th term by an overwhelming margin over Republicans Valdamar Archuleta in the 1st Congressional District. In initial results, DeGette had 78% to Archuleta’s 20%.

At the same time, Assistant House Minority Leader Joe Neguse was leading Republican challenger Marshall Dawson by double digits in the Democrat’s bid for a fourth term representing the 2nd Congressional District, which covers Boulder and Larimer counties and portions of the Western Slope. Neguse had 70% of the vote, and Dawson had 28% in early results.

Democratic U.S. Rep. Jason Crow, who is also seeking a fourth term, was leading Republican nominee John Fabbricatore by a comfortable margin in the Aurora-based 6th Congressional District, running nearly 21 points ahead of his challenger.

On the other side of the metro area, U.S. Rep. Brittany Pettersen, a Lakewood Democrat, led Republican Sergei Matveyuk by 17.5 points in initial returns her bid for a second term in the Jefferson County-based 7th Congressional District.

The four districts are considered safe Democratic seats — all but the 6th CD have been represented by Democrats for decades — and in each, the incumbents outraised and outspent their GOP challengers by large multiples.

Meanwhile, in Colorado’s other U.S. House seats, Republican Jeff Crank was poised to take over for retiring Republican U.S. Rep. Doug Lamborn in the Colorado Springs-based 5th Congressional District, where he led Democratic nominee River Gassen by about 13 points.

In the heavily Republican 4th Congressional District — covering Douglas County, Loveland and the Eastern Plains — U.S. Rep. Lauren Boebert won another term over Democrat Trisha Calvarese. Boebert to fill the seat recently held by former Republican U.S. Rep. Ken Buck, who resigned from Congress earlier this year.

Republican Jeff Hurd took an early lead over Democrat Adam Frisch in the seat Boebert currently represents, the Western Slope-based 3rd Congressional District.

The state’s most competitive House race this year is in the evenly divided 8th Congressional District, which stretches north of Denver to Greeley, where Democratic U.S. Rep. Yadira Caraveo, a Thornton pediatrician, is hoping to win a second term over challenger state Rep. Gabe Evans, a Fort Lupton Republican. In early returns, Caraveo led Evans by about 2 points.