In August 2020, he attracted some media attention when he crossed the floor and voted against his own party, not offering his support for a bill to appoint a special commissioner to oversee mine rehabilitation.

[7] Boyce subsequently won pre-selection and was officially announced as the LNP's candidate for Flynn on 13 July 2021 while visiting the Gladstone Power Station with Deputy Prime Minister Barnaby Joyce, Senator Matt Canavan and outgoing Flynn MP Ken O'Dowd.

[9] His resignation triggered the 2022 Callide state by-election, which Queensland speaker Curtis Pitt announced would be held on 18 June 2022.

[10] During his campaign to be elected as the member for Flynn, Boyce attracted media attention after making comments which appeared to question the Morrison government's plan to reach net zero carbon emissions by 2050 by describing it as "flexible" with "wiggle room".

"[15] This was followed by an article in The Guardian two days later which revealed Boyce was a foundation member of The Saltbush Club, and in 2019 had been a signatory to an international statement which claimed there was no climate emergency.