Georgia Democrat Jon Ossoff raised $8.3 million during the first quarter of the year, his campaign announced Wednesday night.

It’s a stunning haul, especially for a 30-year-old first-time candidate who’s running as a Democrat in a traditionally Republican House district.

Ossoff’s candidacy for the special election to fill Georgia’s 6th District seat, the first competitive congressional election of Donald Trump’s presidency, has attracted national attention. That shows in his fundraising, which his opponents will surely use against him: 95 percent of his donations came from out of state, according to The Atlanta Journal-Constitution, which reviewed his first quarter filing. His report has not yet been filed with the Federal Election Commission.

The former Hill staffer and documentary filmmaker ended the quarter with $2.1 million. The average donation was $42.52, according to the campaign. The liberal website Daily Kos says its supporters have given Ossoff $1.25 million.

Eighteen candidates are running in the April 18 open primary to fill the seat vacated by former Republican Rep. Tom Price, who is now serving as Health and Human Services secretary. If none of the candidates receives more than 50 percent of the vote, the top-two finishers, regardless of party, will advance to a June 20 runoff.