“The committee has been brilliant in that tactic of using senior officials, family members, those high up in the campaign and Republicans who supported him,” said Stephanie Grisham, the former White House press secretary, who served under Mr. Trump for almost his entire term but has since emerged as a critic. “That’s what gives me hope that it will break through.”…

At times, the committee’s indictment has been so focused on Mr. Trump, and so full of praise for the few Republicans who stood up to him, that some Democrats privately fear the strategy could backfire — by setting Mr. Trump apart from a Republican Party that, in fact, remains deeply loyal to him.

“It’s absolutely infuriating,” said Jessica Post, the executive director of the Democratic Legislative Campaign Committee, which is involved in statehouse races. “There is a much broader story than is being told by the Jan. 6 committee about the anti-democracy forces in the states.”

She was particularly frustrated at the lionization of Mr. Bowers merely for upholding the law, noting that Arizona had passed more restrictive voting bills on his watch. “I just don’t think you get a gold star for doing the absolutely least,” Ms. Post said.