The AP projects that Biggs has defeated Burns in the GOP runoff in South Carolina's 3rd District. With more than 95 percent of the expected vote reporting, she leads 51.1 percent to 48.9 percent — what looks to be a narrow win. This is a somewhat surprising result: Trump had endorsed Burns, who led in the initial primary vote on June 11 and even had an endorsement from the third-place finisher.

But Biggs may have triumphed thanks to more than $500,000 in outside help from two conservative super PACs that have been spending against more anti-establishment candidates in GOP primaries like Burns. Per FEC data, Conservatives for American Excellence and America Leads Action spent mostly against Burns but also made some outlays to support Biggs.

—Geoffrey Skelley, 538

With 24 percent of the expected vote in, Mannion is leading Hood in the Democratic primary in the 22nd Congressional District, 60 percent to 40 percent, according to the AP. Hood had hoped to position herself to Mannion's left on issues like abortion and has a fundraising advantage, as Geoffrey wrote earlier. But Mannion, a state Senator, is a well-known entity in much of the district.

—Monica Potts, 538

As Geoffrey just mentioned, the Republican women who voted with Democrats to defeat the near-total abortion ban measure were the only Republican women in the South Carolina Senate. Healy stated earlier this month, "You can’t tell me that’s not a slap in the face of women.” According to the Center for American Women in Politics, South Carolina ranks 47th in terms of female representation in state legislatures.

—Meredith Conroy, 538 contributor

In other Palmetto State news, state Sen. Katrina Healy has conceded defeat in the runoff for South Carolina's 23rd Senate District. Healy belonged to a group of three women state senators from the GOP who broke with their party to oppose a near-total abortion ban in the state last year. But this made them targets in their party primaries: Two lost renomination in the June 11 primary, while Healy is now headed for defeat in a runoff after no candidate won a majority two weeks ago.

—Geoffrey Skelley, 538

In the solidly red 24th District in Upstate New York, Republican Rep. Claudia Tenney faces a primary challenge from businessman Mario Fratto, who held Tenney to a 14-point win in her 2022 primary race. Having previously represented a seat located more in central New York, Tenney opted to run in the new 24th District in 2022 after redistricting even though she previously represented very little of it. Her weak performance partly reflected that unfamiliarity, but she's now a better-known quantity to voters in the region (and the 24th didn't change that much on a new map implemented earlier this year). Still, Fratto has tried to get to Tenney's right by claiming she's a "RINO" — Republican in name only — who has been insufficiently conservative in office. He's self-funded most of his challenge, raising $508,000 overall, but that's put him well behind Tenney's $2.0 million in receipts. Tenney has accused Fratto of being close to Nick Fuentes, a white supremacist and antisemitic leader — a claim Fratto denies. But she also felt threatened enough to run ads promoting her endorsement from Trump and attacking Fratto as "dangerously liberal."

—Geoffrey Skelley, 538