Donald Trump won a mock election in a swing county in the battleground state of Virginia on Saturday — a county that President Obama won twice.

More than 1,000 people voted in a mock 2016 election, which was supervised by county election officials, at the Potomac Nationals game on Saturday in Woodbridge, Virginia where Trump received 42.9 percent of the vote. Hillary Clinton had 39.3 percent.

“Prince William is a swing county that has the power to decide who will get Virginia’s 13 electoral votes,” stated Trump’s Virginia chairman Corey Stewart in a press release on Sunday.

Stewart continued:

As the only countywide elected official in Northern Virginia, I understand how to win in the region. Obama won Prince William County twice, but Trump’s message has resonated with our voters. Saturday night’s crowd was a strong representation of our electorate, and I believe we will take Prince William on November 8th.

The mock election’s full results showed 7.98 percent of people wrote in a candidate of their choice, while Libertarian candidate Gary Johnson received 7.9 percent support and Green Party candidate Dr. Jill Stein ranked last with 1.9 percent.

A recent Emerson College poll shows Trump behind Clinton by one point in Virginia — within the 3.4 margin of error.