One Senate seat is up for election in Pennsylvania, held by a Democratic incumbent. The state’s congressional borders were ruled unconstitutional in January and redrawn – this is the first time voters will be selecting representatives under the new boundaries. They will also be choosing a governor, an office currently held by a Democrat. See Pennsylvania’s primary results.
Sen. Robert P. Casey Jr. is considered one of the safest bets for reelection among the 10 Democratic incumbents running in states Donald Trump won in 2016. Trump won Pennsylvania by only 0.7 points. The president has repeatedly endorsed Rep. Lou Barletta (R), an early supporter, in tweets and rallies in the state.
How the vote has swung from 2016, so far
Margin in the 2018 Senate race for counties that went for Clinton or Trump in the 2016 general election, and the number of precincts reporting in those counties overall.
For counties with at least 10% of precincts reporting, this is how far the vote in the Senate race has shifted towards Democrats or Republicans, compared to 2016.
Going into this election, Pennsylvania had 6 Democratic representatives and 10 Republican representatives, with 2 seats currently open. Here’s how each district leans politically, based on how it voted in the 2016 presidential election, with 2018 results as they come in.
In 2016, Clinton won this district by 61.3 points and Robert Brady (D) won by 64.4.
Rep. Brian Fitzpatrick (R) is running in this redrawn suburban district that overlaps with the 8th Congressional District, which he represents. His district is more Democrat-leaning than the previous one, and he's being challenged by Democratic philanthropist Scott Wallace.
In 2016, Trump won this district by 35.9 points and Tom Marino (R) won by 40.3.
Rep. Scott Perry (R) represents Pennsylvania's 4th Congressional District; he's now running in a district that voted for Donald Trump but by a smaller margin than the old one. His challenger is Democrat George Scott, who has criticized Perry's membership in the conservative House Freedom Caucus.