Mike Pence has decided to go up against his former boss in the upcoming Arizona Gubernatorial Primary race. The former Vice President has decided once again to back a Trump-endorsed challenger, which seems to be a growing trend throughout the 2022 primary elections between the former duo.

Pence’s latest move is an endorsement of Republican Karrin Taylor Robson in the Arizona governor’s race who will be running against Trump-backed Kari Lake in the state’s August 2 primary.

“As Arizona Democrats pursue the reckless Biden-Harris agenda, Karrin Taylor Robson is the only candidate for Governor that will keep Arizona’s border secure and streets safe, empower parents and create great schools, and promote conservative values,” Pence said in a statement announcing the endorsement. Robson also has the endorsement of outgoing Arizona Gov. Doug Ducey, who turned his back on Donald Trump by refusing to challenge the 2020 election results in his state.

The VP endorsement puts Pence in direct opposition to Trump, who is supporting former local TV anchor Kari Lake. “Few can take on the Fake News Media like Kari,” Trump said in announcing his endorsement last fall.

Lake has been one of Donald Trump’s more high-profile supporters. She has gone as far as to say it is “disqualifying” that Robson does not believe the election was stolen from Trump.