EVERETT — One state lawmaker is on course to win re-election without a ballot battle.

So, too, is the man seeking to become the next Snohomish County prosecutor.

And the former leader of the state Republican Party is taking on one of the state’s most powerful Democrats in Congress.

Those story lines emerged as the filing period for political races came to a close.

All week people had the chance to enter any of 38 contests for local, state, federal and judicial offices. The primary is Aug. 7. In any race with three or more candidates, the two who get the most votes in the primary will advance to the Nov. 6 general election.

When filing ended, incumbent Rep. Mike Sells, D-Everett, had no opponent. Unless a write-in candidate surfaces, he will win an eighth term in the 38th Legislative District.

Adam Cornell, a deputy county prosecutor, is in a similar position. He is looking to succeed his retiring boss, Mark Roe, and was the only one to file for the seat.

One of the biggest surprises came in the already crowded contest for a seat in the U.S. senate.

Incumbent Democrat Sen. Maria Cantwell is seeking a fourth term and drew 29 opponents, including Susan Hutchison, the former chairwoman of the state Republican Party.

Two Snohomish Public Utility District commissioners are facing competition. District 1 Commissioner Sid Logan of Arlington, is being challenged by Sam Buchanan of Arlington and two others.

Three members of the U.S. House who represent Snohomish County — Democratic Reps. Rick Larsen of Everett, Suzan DelBene of Medina, and Pramila Jayapal of Seattle — face opponents.

DelBene, who serves in the 1st Congressional District, has four challengers, including Scott Stafne of Arlington, a Republican who in 2016 ran for this seat as a Libertarian.

Larsen, who serves in the 2nd Congressional District, has five opponents, including Collin Richard Carlson of Marysville.