PHILADELPHIA (MarketWatch) — Wine and beer were flowing at a party in downtown Philadelphia just before Democrats made Hillary Clinton their presidential nominee. But some partygoers from Pennsylvania weren’t ready to pop the bubbly for Clinton just yet.

Keystone State residents said the former secretary of state can’t take winning Pennsylvania for granted, in spite of a historically favorable climate for Democrats. A Republican presidential candidate hasn’t carried Pennsylvania since George H.W. Bush in 1988. But one recent Quinnipiac University poll showed Donald Trump would beat Clinton in the state, and her backers recognize the threat.

Read:Trump leads Clinton in Florida, Pennsylvania polls.

Trump is scheduled to campaign in Scranton — the hometown of Vice President Joe Biden — on Wednesday.

“Trump has been very good about messaging on fear,” Lindsey Williams of Pittsburgh told MarketWatch at a reception hosted by Emerge America, an organization that trains Democratic women to run for public office. “I don’t think we can get complacent” about Clinton’s chances in Pennsylvania, said Williams, who identified the economy as the biggest issue for voters.

“We can’t take anything for granted this election,” said Christina Hartman, who is running to represent Pennsylvania’s 16th congressional district in the House of Representatives. “I think that we all need to be working very, very hard to register new voters, get out the vote and do what’s necessary to make sure that Democrats win in Pennsylvania this year,” Hartman said. “Up and down ballot.”

Clinton fares better in Pennsylvania in the most recent average of polls from RealClearPolitics, which includes the Quinnipiac survey that showed Trump leading Clinton by two points. The average shows her only narrowly leading Trump, however, by 3.2 percentage points.

The Quinnipiac poll, meanwhile, shows Trump as much stronger on the issue Williams said were key. Fifty-four percent of Pennsylvania voters said Trump would be better at creating jobs, versus the 39% who said the same thing for Clinton. Speaking this week in Philadelphia, former Pennsylvania Gov. Ed Rendell, a Democrat, said Trump’s attacks on trade agreements resonate in the state.

The day the Quinnipiac poll came out, Clinton’s spokesman tweeted: “We know the battlegrounds are going to be close til the end” and that Trump was a “serious danger.”

The poll focused on Florida, Ohio and Pennsylvania. Since 1960, no candidate has won the White House without taking at least two of those three states, as Quinnipiac notes.

Williams, Hartman and Chester County resident Kristine Howard all gave their views on the race at the Emerge America event, held at a club on the 52nd floor of a skyscraper on Market Street. Attendees could sample at least six different kinds of beers, as well as Philly cheesesteak sliders and fusilli primavera. Oregon Gov. Kate Brown and former Texas state Sen. Wendy Davis spoke to the group.

Howard said she didn’t believe the poll showing Trump ahead of Clinton was accurate. Still, she predicted Clinton would invest heavily in Pennsylvania in order to win it in November.

“I think we’re going to see a lot more of her here,” Howard said.