As Geoffrey just mentioned, Summer Lee is leading her primary challenger, Bhavini Patel, in the 12th District. Political science research actually finds that incumbent women in Congress are more likely to face challengers than incumbent men. This is due to several factors, such as a history of women's underrepresentation which gives the impression that female incumbents are more vulnerable; this leads to higher quality challengers, too.

—Meredith Conroy, 538 contributor

The three Republicans running for the chance to defeat Rep. Susan Wild in Pennsylvania's competitive 7th District are all anti-abortion. With 26 percent of the expected vote in, state Rep. Ryan Mackenzie has a lead with 42 percent of the vote. Mackenzie has told a local news station that the issue is best left to the states because there's no consensus at the federal level. In Pennsylvania, he's voted for a constitutional amendment saying there's no right to taxpayer-funded abortions.

—Monica Potts, 538

Lee now leads Patel 57 percent to 43 percent in Pennsylvania's 12th District Democratic primary, with 57 percent of the expected vote reporting. Allegheny County has begun reporting votes cast on Election Day (that is, not early or by mail), and Lee is winning about 3 in 4 of those votes so far. That edge may not last, but considering Lee leads 55 percent to 45 percent among the early and mail votes, she doesn't need much to hold her lead. A Patel comeback looks quite unlikely. In fact, Decision Desk HQ projected the race for Lee a few minutes ago. We're still waiting for a projection from ABC, though.

—Geoffrey Skelley, 538

As expected, given that both were unopposed, ABC News has projected that both Republican David McCormick and Democratic Sen. Bob Casey will win their respective primaries and advance to the general election for Pennsylvania's U.S. Senate seat this November. Casey starts out with a slight advantage in both fundraising and the polls, but most analysts are still predicting a tight race.

—Cooper Burton, 538

With Biden and Trump having sewn up their party's nominations, the Pennsylvania presidential primary is an afterthought today. But the Keystone State will definitely be at the forefront of the general election campaign: In 2016, Trump carried it by 0.7 percentage points, and in 2020, Biden won it by 1.2 points, making Pennsylvania one of the most competitive states in the country. And with 19 electoral votes, the state is the largest battleground-state prize in the Electoral College (if you don't include Florida, which has 30 electoral votes but may have a GOP lean now).

Early polling for the November election confirms the expectation that Pennsylvania will once again feature a hard-fought campaign. 538 hasn't released its general election polling averages yet — they're coming very soon — but Trump and Biden are running close to even in recent polls. The most recent one we have, a mid-April survey from Beacon Research/Shaw & Co. Research/Fox News, found them tied at 48 percent, with Trump edging ahead by 2 points when third-party candidates like Robert Kennedy Jr. were included as options.

Given Pennsylvania's importance, it's no surprise that both Biden and Trump are heavily focused on it. Biden just completed a campaign swing through the state last week, including a stop at his childhood home of Scranton. Just days earlier, Trump held a campaign rally in the Lehigh Valley ahead of the start of his hush-money trial in New York City. There'll certainly be more of that in Pennsylvania — and a gazillion attack ads on television and digital airwaves — before Election Day.

—Geoffrey Skelley, 538