Rusty Bowers, the Arizona house speaker who testified to the January 6 committee about how he resisted Donald Trump’s attempt to overturn his defeat by Joe Biden in the sun belt state, has been formally censured by his own Republican party.

Kelli Ward, chair of the Arizona Republican party, said on Tuesday its “executive committee formally censured Rusty Bowers tonight – he is no longer a Republican in good standing and we call on Republicans to replace him at the ballot box in the August primary”.

Ward released a copy of the formal censure, which included “killing all meaningful election integrity bills” among Bowers’ alleged misdeeds and called on Arizona voters to “expel him permanently from office”.

Bowers testified to the House January 6 committee on 21 June. Discussing Trump’s claim that Bowers told him the Arizona election was “rigged”, Bowers said: “Anyone, anywhere, anytime I said the election was rigged, that would not be true.”

Bowers also recalled a conversation with Rudy Giuliani in which Trump’s personal lawyer, a key player in the attempt to prove mass electoral fraud, allegedly said: “We’ve got lots of theories but we just don’t have the evidence.”

Bowers also spoke about how his Christian faith motivated his defiance of Trump, and described threats made to his safety by Trump supporters while his daughter lay mortally ill.

Like Liz Cheney, one of two Republicans on the January 6 committee and its vice-chair, Bowers was given a Profile in Courage award for his resistance to Trump.

After the hearing at which he appeared, though, it emerged that Bowers had previously told the Associated Press: “If [Trump] is the nominee [in 2024], if he was up against [Joe] Biden, I’d vote for him again. Simply because what he did the first time, before Covid, was so good for the country. In my view it was great.”

This month, Bowers told the Deseret News he might have changed his mind.

“I don’t want the choice of having to look at [Trump] again,” he said. “And if it comes, I’ll be hard pressed. I don’t know what I’ll do.

“But I’m not inclined to support him. Because he doesn’t represent my party. He doesn’t represent the morals and the platform of my party …

“That guy is just – he’s his own party. It’s a party of intimidation and I don’t like it. So I’m not going to be boxed by, ‘Who am I gonna vote for?’ Because that’s between me and God. But I’m not happy with him.

“And I’m not happy with the thought that a robust primary can’t produce somebody better than Trump, for crying out loud.”

He also told Business Insider: “Much of what [Trump] has done has been tyrannical, especially of late. I think that there are elements of tyranny that anybody can practice on any given day, and I feel like I’ve seen a lot of it.”