Missouri, Michigan, Washington and Kansas primaries 2024: Cori Bush loses

The 6th District, covering Washington's Kitsap and Olympic Peninsulas and most of Tacoma, is home to an open primary after Democratic Rep. Derek Kilmer announced his retirement. Democrat Hilary Franz, the state's public lands commissioner, suspended a gubernatorial bid to run for this seat and snagged Kilmer's endorsement for her trouble. For a moment it seemed like Franz, who is leading in fundraising, was a shoo-in for the seat, but this has actually shaped up to be a competitive race.

Democratic state Sen. Emily Randall isn't far behind Franz in funds — she's raised over $1 million, close to Franz's $1.3 million — and has collected a stack of high-profile endorsements, including Sen. Patty Murray and former Gov. Christine Gregoire. This is a race worth keeping an eye on as voters might end up seeing double with a Democrat-versus-Democrat general election between two candidates who agree on nearly all the issues.

—Kaleigh Rogers, 538

It's 8 p.m. Eastern, and polls just closed in Missouri as well as in most of Michigan and Kansas. (Polls close in an hour in parts of Michigan's Upper Peninsula and a handful of western counties in Kansas.)

We're tracking about a dozen key races in those three states, so results may start coming fast and furious between now and 11 p.m. Eastern, when the last polls close in Washington state. Watch this space!

—Tia Yang, 538

A crowded primary emerged in eastern Washington's 5th District, after Republican Rep. Cathy McMorris Rodgers opted not to seek reelection. Six Republicans and five Democrats are running, including Spokane County Treasurer and former state Sen. Michael Baumgartner, a Republican who is leading the pack in fundraising. As of mid-July, Baumgartner had raised over $790,000, more than double the next highest fundraiser, Republican state Rep. Jacquelin Maycumber. At a debate in June, Baumgartner was one of the few Republicans on stage who said he believed Biden legitimately won in 2020, while Maycumber said she had "grave concerns" about the 2020 results.

With McMorris Rodgers retiring relatively late (she made her announcement in February), there hasn't been much time for candidates to build funds or momentum, meaning other than Baumgartner's financial edge, it's hard to identify a frontrunner in the race. In this red-leaning district, which gave Trump 53 percent of the vote in 2020, there's a chance two GOP candidates could advance to the general election, although there are a few credible Democrats running too, such as former State Department officer Carmela Conroy and gynecologist Bernadine Bank.

—Kaleigh Rogers, 538

In the solidly red 4th District in central Washington, Republican Rep. Dan Newhouse once again finds himself fighting for his political life. Of the 10 House Republicans who voted to impeach Trump after the events of Jan. 6, Newhouse was one of only two who managed to secure another term in the 2022 election. This time around, Newhouse has two major GOP opponents in former NASCAR driver Jerrold Sessler, who finished behind Newhouse two years ago and initially received Trump's sole endorsement for this race, and veterans advocate Tiffany Smiley, the party's 2022 Senate nominee (who lost to Sen. Patty Murray). Until Sunday, it more or less appeared that Newhouse was the least pro-Trump candidate, Sessler the most and Smiley somewhere in between. But then Trump further muddled things by also endorsing Smiley, making this yet another primary where he's backed multiple candidates. If Smiley gains at Sessler's expense, that could have major ramifications for who makes it to the general election: Unlike in 2022, local Democrats haven't coalesced around one candidate, making it more likely that two Republicans could advance out of the top-two primary.

Newhouse does have a financial advantage, having raised almost $1.6 million, more than Smiley ($720,000) and Sessler ($409,000) combined. But pro-Smiley groups have spent $539,000 supporting her or attacking the other two Republicans, while pro-Newhouse outfits have invested $190,000. With an eye on winning over conservatives considering Smiley, Newhouse's campaign has attacked her for supposedly deceiving GOP donors by creating a political action committee ostensibly aimed at raising money for Republican candidates but that the Seattle Times found had mostly worked to retire Smiley's 2022 campaign debt. Newhouse also promoted his efforts to protect Washington farm land from purchase by "Communist China." For her part, Smiley has emphasized her outsider credentials, attacked Newhouse for voting to impeach Trump and claimed that Sessler would like to tax beef. Sessler has understandably played up Trump's support for his campaign as well as his endorsements from the far-right House Freedom Caucus and the state GOP.

—Geoffrey Skelley, 538