South Carolina, Nevada primaries and Ohio special election: Nancy Mace, Sam Brown win

Two of the races I’m watching tonight, the Republican primaries in South Carolina’s 3rd and 4th Districts, saw an advertising moment that made waves towards the end of last year. The incumbent representatives in both of those district — the 3rd’s Jeff Duncan and the 4th’s William Timmons -- each had scandals involving accusations of infidelity. In December, a radio spot pointing out the cheating scandals was funded by a conservative group, Restore Our Values, and was a real awkward moment as the campaigns heated up. Duncan actually decided not to seek reelection shortly afterward. Timmons, as Geoffrey detailed above, is still running but faces a competitive challenger in state Rep. Adam Morgan.

—Kaleigh Rogers, 538

In South Carolina’s 1st District, the embattled Mace has jumped out to a lead with about 10 percent of the expected vote counted. She leads Templeton, 59 percent to 27 percent, according to the Associated Press. And remember, she needs to stay above 50 percent to avoid a runoff.

—Jacob Rubashkin, Inside Elections

It's 7:30 p.m. Eastern, which means polls are now closed in Ohio. There are no primaries in the Buckeye State tonight, but there is a special election in the state's 6th District, which was represented by Republican Rep. Bill Johnson until January, when he resigned to lead Youngstown State University.

According to Daily Kos Elections, Ohio's 6th District voted for Trump 64 percent to 35 percent in 2020, so Republican state Sen. Michael Rulli should easily defeat Democratic Air Force veteran Michael Kripchak there today. However, we'll still be keeping an eye on Rulli's winning margin as an indicator of the national political mood. Special election performance over a partisan baseline has historically been a good predictor of general election outcomes.

That said, individual special elections can be idiosyncratic, so you really need to consider today's result in Ohio's 6th alongside the other special congressional elections we've had this cycle. So far, Democrats have overperformed the weighted partisan leans of the districts in those elections by an average of 4 percentage points. We'll see how much — or whether — Ohio's 6th moves that average.

—Nathaniel Rakich, 538

I don't know about the cinematography, Monica, but if Halo composer and NV-03 candidate Marty O'Donnell comes out on top in his GOP primary tonight, I hope we'll see some great campaign ad scores from him.

—Tia Yang, 538