"My campaign has topped half a million and we are gunning for the million dollar mark by the end of the year," Bouchard said in a statement to Fox News.
Bouchard had raised over $330,000 by the April 15 reporting deadline and hit $400,000 before early May. That means contributions have continued to flow in at a steady clip even after the initial rush when he announced his campaign in January.
That's a significant haul for Bouchard, who has been the biggest fundraiser among the challengers to Cheney, R-Wyo., and one of the most successful fundraisers among the group of primary challengers to House Republicans who voted to impeach the former president.
But Bouchard's fundraising numbers pale in comparison to Cheney's. The incumbent raked in $1.54 million from January to March. That was five times the amount she raised during the same time period two years ago, reflecting that high-profile support for opposition to Trump can help garner donations for a campaign.
Even after Trump's impeachment trial Cheney continued to emphasize that she does not believe he should play a role in the future of the Republican Party. And she regularly disputed his false claims that the presidential election was stolen.
Trump has deemed Cheney "bad for our Country and bad for herself" and announced he will make an endorsement of one of her primary challengers, but has not yet done so.
Cheney, for her part, is casting herself as one of the leaders of the anti-Trump movement in the Republican.
"Bring it on," she proclaimed on NBC when asked about the desire of Trump and his allies to back a primary challenger to remove her from her House seat. "As I said, if they think that they are going to come into Wyoming and make the argument that the people of Wyoming should vote for someone who is loyal to Donald Trump over somebody who is loyal to the Constitution, I welcome that debate."
"I think that it's very important for us to be a party based on truth. I think it's important for us to understand the threat that the claims that the former president is making, the threat is ongoing," she added in an interview on "Special Report" on Fox News.
Among the other challengers to Cheney in the Wyoming Republican primary are Wyoming state Rep. Chuck Gray and lawyer Darin Smith.
Bouchard's campaign hit a bump late last month when he disclosed that when he was 18-years-old he got a 14-year-old girl pregnant. He said that people had been investigating the matter in relation to his campaign. Cheney Spokesman Jeremy Adler insisted that Cheney's team had "absolutely no involvement" in looking into this chapter of Bouchard's past.