McIntosh noted that the Club for Growth spent $6.5 million to help Moreno with advertising in the primary through its different super PACs, including the Bitcoin Freedom Fund.
Brown's office didn't respond to multiple requests for comment.
Brown told Politico he hasn't ruled out running for Vice President-elect JD Vance's open Senate seat in Ohio, which will be filled by special election in 2026.
Moreno benefited from branding himself as the "change" candidate while Brown "became a defender of the status quo," Shirzad said.