Prepaid postage, a crowded U.S. Senate race and female and first-time candidates were a few things to watch in the Aug. 7 primary election results, the first wave of which was posted at 8:04 p.m. Tuesday.

Washington votes by mail and ballots can be postmarked as late as Election Day, meaning results could change in the following days. Washington also uses a top-two primary; all candidates run on the same ballot regardless of party affiliation and the top two finishers advance to the general election.

About 316,460 ballots were counted and 30,318 still needed to be processed in King County as of Tuesday’s results. On Wednesday, 361,707 ballots were counted, with 40,525 in the queue. More than 523,00 ballots had been counted as of Aug. 10, placing voter turnout at around 40 percent.

Incumbents, Democrats and women did well in initial returns.

U.S. Sen. Maria Cantwell drew 28 challengers, and received 66.67 percent of the vote in King County. She will face Republican Susan Hutchison, who received 19.61 percent, in the Nov. 6 general election. Statewide, Cantwell received 55.26 percent of the vote as of Aug. 8, and Hutchison tallied 23.94 percent.

In the 1st Congressional District, Democrat and incumbent Suzan DelBene was leading her challengers, receiving 60.21 percent of the vote in all four counties in the district, according to the secretary of state’s website. She will face Republican Jeffrey Beeler, who received 25.06 percent, in the general election, while Robert Mair, Adam Pilskog and Scott Stafne will exit the race.

On the legislative side, Republican Beth Daranciang signed up to challenge incumbent and Democrat David Frockt for state senator in the 46th District and received 18.49 percent of the vote to Frockt’s 81.51 percent.

Also in the 46th, Democrat Gerry Pollet was leading Republican Jeff Patton 82.28 percent to 17.72 percent for state representative, Position 1, while Democrat Javier Valdez was leading Republican Jerry Zeiger-Buccola 82.43 percent to 17.72 percent for Position 2.

Rep. Derek Stanford is running to retain Position 1 in the 1st Legislative District, and received 67.21 percent of the vote, followed by Republican Josh Colver with 25.89 percent and Colin McMahon with 6.9 percent. Also in the 1st, Libertarian Matt Seymour and Republican Debra Blodgett signed up to run against Position 2 incumbent and Democrat Rep. Shelley Kloba. Kloba was leading with 63.04 percent of the vote, to Blodgett’s 31.31 percent and Seymour’s 5.65 percent.

King County Prop. 1, a property tax levy for automated fingerprint identification system services, was passing, receiving 56.09 percent of the vote.

See results.vote.wa.gov/results/20180807 for more. King County Elections will post updates at 4:30 p.m. each week day until the final certified results are posted on Aug. 21.