We're also monitoring the GOP primary in the 1st District, a light-blue seat in and around Las Vegas held by Democratic Rep. Dina Titus. In the 2022 general election, Titus defeated Army veteran Mark Robertson by nearly 6 percentage points, but Robertson is back for another go. However, he's only raised $106,000, a figure dwarfed by restaurateur Flemming Larsen, a GOP rival who has brought in a whopping $1.8 million thanks to $1.5 million in self-funding. It's unclear if a recent report by the Nevada Independent disclosing that Larsen hired undocumented immigrants at his southern California restaurants will notably impact the race.

—Geoffrey Skelley, 538

The AP now estimates that virtually all of the vote is counted in Ohio's 6th District, and the final-ish margin is Rulli 55 percent, Kripchak 45 percent. According to a weighted average of presidential results in this district, this is an R+32 district, which means Democrats overperformed here by a whopping 22 points.

Obviously, that's a very impressive performance by Democrats. However, one special election on its own doesn't necessarily mean anything. That said, the average of a party's overperformance in special elections for the cycle has historically been correlated with its performance in the subsequent general election, and that's good news for Democrats. On average this cycle, they have now overperformed in federal special elections by an average of 7 points — not Ohio 6th-level, but still quite solid.

—Nathaniel Rakich, 538

It's 10 p.m. Eastern, and polls are now closed in the Silver State, our last primary state of the evening. Nevada law says that the state can't report results until the last voter in line has voted, so we may not see results right away. (But once we do, it will likely be a big chunk of the final tally.)

—Tia Yang, 538

In another race mostly situated in the Las Vegas area, Democratic Rep. Steven Horsford will be defending the blue-leaning 4th District, and the two principal GOP contenders are retired Air Force Lt. Col. David Flippo and former North Las Vegas Mayor John Lee. Flippo has raised $927,000 to Lee's $851,000 — both candidates have self-funded more than half of their totals — but Lee may have the upper hand here, thanks to endorsements from Trump and Lombardo. However, Lee is a former Democrat who switched parties ahead of a failed bid for the Republican nomination for governor against Lombardo in 2022, which could weaken his appeal among primary voters.

—Geoffrey Skelley, 538

We're about 20 minutes out from polls closing in Nevada, so let's take a look at some of the key races happening there tonight.

Nevada will hold a pivotal Senate contest this fall for the seat held by Democratic Sen. Jacky Rosen. Retired U.S. Army Capt. Sam Brown is the front-runner in the Republican primary, having established himself by finishing second for the GOP nomination in Nevada's 2022 Senate race. Brown's candidacy is highlighted by his military service record, during which time he suffered third-degree burns from a 2008 roadside bomb explosion in Afghanistan. Brown has proved a prodigious fundraiser, having brought in $7.1 million as of May 22. Former Ambassador to Iceland Jeffrey Ross Gunter, who served under Trump, is Brown's main competition, and he's self-funded $2.7 million of the $3.3 million he's raised.

National Republicans have largely consolidated behind Brown, including the National Republican Senatorial Committee. Brown and the NRSC have run joint ads focused on immigration and national security, and Rosen's campaign is already running spots against him focused on abortion rights. For his part, Gunter has linked himself to Trump, though Trump made a last-minute endorsement of Brown Sunday night, and has run ads claiming Brown backs the controversial-but-stalled plan to store nuclear waste at Yucca Mountain. Brown expressed support for the plan during his 2022 bid, but has backtracked in the face of criticism this time around.

It's unclear how big a threat Gunter is to Brown, as an early June survey from Noble Predictive Insights found Brown ahead 53 percent to 15 percent. But Gunter released a late May survey by Kaplan Strategies that found him running about even with Brown at around 30 percent. Outside groups have come in big for Brown to the tune of $4.3 million, and Gunter is enough of a danger that the pro-Brown Duty First Nevada super PAC is running ads portraying Gunter as a fake Republican. Still, Gunter's campaign actually canceled some ad buys ahead of the primary — not exactly a signal of confidence.

—Geoffrey Skelley, 538