(MEDIAITE) — House Speaker Paul Ryan’s Wisconsin Democrat challenger Randy Bryce announced his campaign raised $2.1 million at the end of the last fundraising quarter, which amounts to $4.75 million in total contributions.

As reported by Roll Call, Bryce’s push to flip Wisconsin’s 1st District includes $2.3 million in cash on hand, which — coupled with his recent fundraising achievements — means the “Iron Stache” has raised more money than any other Ryan challengers in the past two decades.

“Paul Ryan has never been more vulnerable,” said Bryce campaign spokeswoman Lauren Hitt. “The Speaker is facing a well funded, well organized opponent with broad support, locally and nationally, in an extremely anti-incumbent environment. He may just want to put those rumors to rest and bow out gracefully now.”

However, Ryan won his last race in a blowout, so Bryce still has an uphill battle to face in defeating the top GOP congressman. Specifically, Ryan won the