ABC News reports that Janelle Stelson is projected to win the Democratic nomination in Pennsylvania's 10th District. With 63 percent of the expected vote reporting, she leads with 44 percent, well ahead of Mike O'Brien's 23 percent in second place. Stelson will advance to the general election to face Rep. Scott Perry, who has arguably the most conservative voting record of any Republican who represents a seat that Trump would've won by less than 5 points in 2020 or that Biden would've carried. However, the GOP starts out as favorites for the general election, as ratings outlets view it as a Lean Republican seat.

—Geoffrey Skelley, 538

ABC News reports that progressive Philadelphia State Rep. Malcom Kenyatta is projected to win in the Democratic Auditor General primary. He's currently ahead of Mark Pinsley by around 23 percentage points, a significant improvement from the last time he appeared on a statewide primary ballot, winning just 11 percent of the vote in the 2022 Senate primary. He will face Republican incumbent Timothy DeFoor in November, who ran unopposed today.

—Mary Radcliffe, 538

ABC News reports that Rep. Brian Fitzpatrick is projected to win the GOP primary in the 1st District, conquering his right-flank challenge from anti-abortion activist Mark Houck. He's faced a primary challenger in every election since he was first elected in 2016, but has always triumphed. Fitzpatrick will once again go up against Democrat Ashley Ehasz this fall, whom he beat by 10 points in 2022.

—Kaleigh Rogers, 538

I wrote earlier about some of the races for state House. So far, it looks like state Rep. Brown, in West Philadelphia, and state Rep. Salisbury, in the Pittsburgh area, are fending off challenges from the left, according to The New York Times. In the Brown race, Blackwell and Green may have split the vote against him. In the Democratic race for state Senate in Erie, Erie County Democratic Party Chair Jim Wertz is projected to defeat former Fetterman staffer Selena King, according to The New York Times.

—Monica Potts, 538

In the Pittsburgh-based 12th District, progressive Rep. Summer Lee could be vulnerable against Edgewood Borough Council member Bhavini Patel in the Democratic primary. Two years ago, in her first bid for this seat, Lee only won her primary by less than a point. And Patel's challenge has turned into a referendum on Lee's party bona fides. Behind this is Lee's membership in The Squad, a group of progressive House Democrats who've often been at odds with party leaders. This has been especially apparent in the intraparty debate over the Israel-Hamas conflict in Gaza, most recently demonstrated by The Squad joining with about one-sixth of House Democrats in voting against foreign aid to Israel.

Lee's critics have often portrayed her as more dogmatic than pragmatic, a theme Patel's campaign has played up by arguing that Lee wants to undermine Biden and the Democratic Party. She has run ads attacking Lee for opposing the Biden administration and criticized Lee's support for the "uncommitted" movement in the presidential primary that wants Biden to adopt a less pro-Israel stance. Lee has countered by emphasizing her ability to bring federal investment to the district and her pro-choice record. Her campaign has also criticized "Republican-funded super PACs" for meddling — a reference to Patel's backing from Moderate PAC, a group mostly funded by a GOP donor, and the potential influence of the bipartisan American Israel Public Affairs Committee, which has said it might spend $100 million against progressives this cycle.

Heading into the primary, Lee probably has the upper hand. We have no polls, but Lee had outraised Patel nearly 4-to-1 ($2.3 million to $602,000) as of April 3. Meanwhile, outside spending has run about even, according to OpenSecrets. Surprisingly, though, AIPAC's super PAC has not spent money against Lee despite investing $3.9 million to stop her in the 2022 primary. That may mean that AIPAC thinks Patel can't win, that she already has sufficient support and/or that support associated with AIPAC could harm Patel more than help her.

—Geoffrey Skelley, 538