South Carolina, Nevada, North Dakota primaries and Ohio special election 2024: Nancy Mace, Sam Brown win

Democrats nearly won a safely Republican congressional seat.

June 11 was another packed primary day, as voters in South Carolina, Maine, North Dakota and Nevada weighed in on who will make the ballot this fall. We had our eyes on a slew of Republican primaries on Tuesday, including several competitive contests for U.S. House seats, as well as contests to pick Nevada's GOP Senate nominee and effectively pick the next governor of North Dakota.

In South Carolina, Rep. Nancy Mace's Trumpian pivot didn't cost her, as she handily fended off an establishment-aligned primary challenger. Fellow incumbent Rep. William Timmons, who was looking vulnerable after an infidelity scandal, also came out ahead in a closer race against his right-wing challenger. In North Dakota's At-Large Congressional District, Julie Fedorchak became the first non-incumbent woman this cycle to win a GOP primary for a safely red seat. In Nevada, Republican voters chose Sam Brown as their candidate to challenge incumbent Democratic Sen. Jacky Rosen this fall.

Finally, a special election is set to give House Republicans one more seat of breathing room, as voters in Ohio's 6th District filled the seat vacated by Rep. Bill Johnson's departure in January — though not without some unexpected suspense.

As usual, 538 reporters and contributors broke down the election results as they came in with live updates, analysis and commentary. Read our full live blog below.


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Is Brown a good candidate?

I'm not yet sold on Brown being a better than average Senate candidate. I think he's done a good job of staying under the radar relative to other GOP nominees in Montana, Ohio, Pennsylvania and Arizona, and avoided some of the missteps those candidates have made. (It doesn't hurt that Nevada is the perpetual redheaded stepchild of the Senate battlefield, always there but never paid much attention.) But he's still relatively untested. His political record includes failed bids for Texas state House a decade ago and for Senate two years ago. If he does ultimately win, I think it has a lot more to do with Trump's performance in the state than Brown's special strength.

—Jacob Rubashkin, Inside Elections


Is Rosen vulnerable in November?

Nathaniel mentioned that Rosen's senate seat could be the GOP's best pick-up opportunity outside the Big Three red states (West Virginia, Montana and Ohio). I think that's right. Brown doesn't seem to have any strange local scandals (unlike Sheehy in Montana, for instance)>, so the Nevada GOP didn't Dr. Oz itself here. Although Brown isn't originally from Nevada, he has a compelling personal story as a combat veteran, who suffered third-degree burns from a 2008 roadside bomb explosion in Afghanistan.

Of course, Nevada Democrats have dug up a few possible scandals and will focus on the abortion issue. On his website, Brown mentions that he is personally pro-life, but would not support national abortion ban because it would overturn the decision of Nevadans, so he's trying to thread that needle. Brown's wife has also been telling her abortion story so the Brown campaign must recognize that this will be a salient issue.

—Meredith Conroy, 538 contributor


Results in Nevada show Trump might get a sweep tonight on endorsements

In the 11 races where Trump has endorsed a candidate, eight of Trump’s picks have won, including Sam Brown in the Nevada Senate GOP primary. One of the former president’s endorsees is going to a runoff, and the remaining two — including John Lee in Nevada’s 4th District — are leading their races. This adds to Trump’s, as he put it recently, “very unblemished” track record. So far this primary season, only one of Trump’s picks for congressional or gubernatorial races has lost (Christine Serrano Glassner, whom Trump endorsed for the GOP Senate primary in New Jersey), so tonight may very well continue that trend.

Kaleigh Rogers, 538


Lee leading, Flippo following

In Nevada's 4th District, former North Las Vegas Mayor John Lee is leading the GOP primary, 51 to 42 percent, over Air Force veteran David Flippo, with a little less than half the expected vote counted. Lee, a former Democrat, has an endorsement from Trump. Either would be an underdog against Horsford, who weathered targeted races in 2020 and 2022.

—Jacob Rubashkin, Inside Elections