Also on the ballot tonight in North Dakota: a ballot measure that would block anyone from being elected or appointed to the House or Senate from the state if they would turn 81 before their term ended. With 19 percent of the expected vote reporting, the measure is currently supported by 62 percent of the electorate. If the results hold, it would become the first state in the nation with a maximum age for elected office.

The only preelection polling we saw on this measure came from RMG Research/U.S. Term Limits in April/May, and showed voters in support of the measure by 65 percentage points, 78 to 13 percent. So while the measure may be somewhat underperforming, it's still on track to become the law of the land in North Dakota — if it can survive the inevitable legal challenges.

—Mary Radcliffe, 538

As Meredith has noted, Biggs is one of the House GOP’s best chances yet to add a new woman to their caucus. However, I wonder if she will even stay in the race for the June 25 runoff. As David Bernstein notes on BlueSky, twice so far this year (in North Carolina’s 6th and 13th), a Republican candidate has made it to a runoff against a candidate endorsed by Trump only to drop out of the race because they faced such low odds of winning.

—Nathaniel Rakich, 538

The AP is projecting the GOP race to replace retiring Rep. Jeff Duncan in South Carolina's 3rd District will go to a runoff, with pastor Mark Burns and Air National Guard Lt. Col. Sheri Biggs squaring off. With 85 percent of the expected votes counted, Burns currently leads with 32 percent of the vote, with Biggs tailing him with 29 percent of the vote. With those margins, it's anyone's race in two weeks!

—Kaleigh Rogers, 538

With 20 percent of the expected vote in, the Associated Press is projecting that Armstrong will win the North Dakota Republican gubernatorial primary, with 67 percent of the vote so far, compared to Miller's 33 percent. It's a quick result for such a contentious race, where the candidates shared many agreements over policy. Armstrong is likely to triumph over Piepkorn in November in this very red state (although we don't know who would win a singing contest.)

—Monica Potts, 538

Nevada's 3rd District is a light-blue seat around Las Vegas held by three-term Democratic Rep. Susie Lee that will likely host the state's most competitive House race. The two most notable Republican contenders may be video game music composer Marty O'Donnell and former state Treasurer Dan Schwartz, although policy analyst and advocate Drew Johnson and former state Sen. Elizabeth Helgelien are also in the mix. O'Donnell has Republican Gov. Joe Lombardo's endorsement, and he'd raised $541,000 as of May 22 ($500,000 out of his own pocket). That was less than the $922,000 Schwartz had raised ($900,000 in self-funding). But on May 24, O'Donnell gave himself an additional $700,000, meaning he's likely outdistanced Schwartz's total. Meanwhile, Johnson has raised $432,000 ($300,000 self-funded) and Helgelien has raised $282,000.

Interestingly, O'Donnell has said he won't accept money from corporate political action committees, a line we more typically hear from Democrats. This may help explain why Johnson has called O'Donnell a "Seattle liberal." Meanwhile, Schwartz has cast himself as the candidate who will "drain the swamp," but his post-treasurer electoral track record isn't inspiring: He lost GOP primaries for governor in 2018, U.S. House in 2020 and lieutenant governor in 2022. Helgelien left the state legislature in 2012, but she does have endorsements from Trump acolytes like Roger Stone and hard-right Republican Reps. Paul Gosar of Arizona and Anna Paulina Luna of Florida.

—Geoffrey Skelley, 538