Rusty Bowers, the Republican speaker of the Arizona House who offered emotional congressional testimony about the pressure he faced in the weeks after the 2020 election, appears to be headed for defeat in his State Senate primary.

Representative Peter Meijer has conceded the election to his Trump-backed challenger, John Gibbs, in Michigan’s Third Congressional District. “This was a hard-fought primary campaign, and I want to thank everyone in West Michigan for their support.”

Senator Patty Murray, a Democrat from Washington State, is set to face Tiffany Smiley, a Republican, in November. Murray held 54 percent of the primary vote in early returns Tuesday night. Smiley emerged from a crowded field of challengers with 32 percent.

About a quarter of the votes have been tallied in Kansas as voters decide whether to remove abortion rights protections from their State Constitution. But there are still no results from populous Johnson County, which includes moderate Kansas City suburbs.

The addition of 600,000 eligible voters in Washington State since the 2018 midterms appears to be helping turnout, with 135,000 more ballots returned this time, an increase of about a half of a percentage point, according to the secretary of state.

A polling site was moved in the city of Linden, Mich., after a suspicious backpack was left there on Tuesday. A law enforcement investigation is still ongoing, state elections officials said.