Dexter was the big beneficiary of outside spending in the Democratic primary in Oregon’s 3rd District, and the early returns suggest those dollars really may have boosted her despite the fact she represents almost none of this seat in her current state legislative district. With 41 percent of the expected vote reporting, Dexter leads Jayapal 52 percent to 26 percent, so the outstanding votes are going to have to look pretty different for Jayapal to catch Dexter. Jayapal is trying to join her younger sister, Congressional Progressive Caucus Chair Pramila Jayapal, in the House.

—Geoffrey Skelley, 538

The AP is projecting that Jack and Dugan will go to a runoff to decide the Republican nominee in Georgia’s 3rd District. With 92 percent of the expected vote in, Jack has 47 percent and Dugan has 25 percent. The Trump-endorsed Jack will therefore go into the June 18 runoff a strong favorite to win.

—Nathaniel Rakich, 538

With 32 percent of the expected vote reporting in the Republican-on-Republican California 20th District special election, Assemblyman Vince Fong is leading Tulare County Sheriff Mike Boudreaux 74 percent to 26 percent. This is no surprise, since Fong had the endorsement of both Speaker Mike Johnson and ex-Speaker Kevin McCarthy, whose resignation triggered this special election.

—Nathaniel Rakich, 538

With 29 percent of the expected vote reporting in the Republican primary for Oregon's 4th District, Air Force veteran and attorney Monique DeSpain leads former Keizer city councilmember, Amy Ryan Courser, 56 percent to 43 percent. DeSpain has an endorsement from Maggie's List — one of the GOP groups formed to elect more women to office that we've been tracking endorsements from this primary cycle. The winner of this primary will face incumbent Democrat, Rep. Val Hoyle in what's expected to be a competitive race.

—Meredith Conroy, 538 contributor

It's primary day in Georgia, Idaho, Oregon and Kentucky! We've got a break from Senate contests tonight — none of these states have U.S. Senate seats up for election in 2024 — but we'll be closely tracking U.S. House primary action and some other key races. Here's a quick roadmap of what to expect throughout the evening.

Kentucky has the earliest poll closing time tonight (6 p.m. Eastern in the eastern part of the state, 7 p.m. Eastern in the western part), but also probably the sleepiest races, with no seriously competitive House contests. We'll see more action in Georgia, where polls close at 7 p.m. Eastern and we're tracking a competitive open-seat GOP primary and a challenge to an aging Democratic incumbent. Plus, a competitive state Supreme Court race could tell us something about how much abortion is motivating voters in a key swing state.

After that, you may want to take a dinner break or, perhaps, watch Game 1 of the NBA Eastern Conference finals. The next polls close at 10 p.m. Eastern in (most of) Idaho, where incumbent centrist Republican Rep. Mike Simpson is fending off a conservative challenger. Finally, (most of) Oregon's polls close at 11 p.m. Eastern; a couple of primaries there have seen big spending from controversial sources.

As a bonus nightcap, a special election runoff in California will have an immediate impact on House majority math as voters fill former Speaker Kevin McCarthy's old seat, which has been empty since the start of the year. Polls close there at 11 p.m. Eastern as well.
—Tia Yang, 538