Arizona Gov. Doug Ducey (R) is considering at least three prominent Republicans as possible replacements to fill Sen. Jon Kyl’s (R) seat as donors vent about Rep. Martha McSally Martha Elizabeth McSallyThe Hill's Campaign Report: Presidential polls tighten weeks out from Election Day Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' New ABC/WaPost poll finds Trump edging Biden in Arizona, Florida MORE’s (R) failed bid for the state’s other Senate seat this year.

McSally remains a contender, according to several sources with knowledge of Ducey’s decisionmaking process.

But a memo McSally’s team released after her nail-biter loss to Sen.-elect Kyrsten Sinema (D) angered donors who thought McSally had not shown any introspection about how she might have run the race differently, according to some who spoke with those donors.

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In the memo, McSally’s campaign team pointed to Sinema’s significant spending advantage, aided by outside groups that spent far more than their Republican rivals.

“A certain segment of [Arizona] Republicans was outright hostile to President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE, and was against the [Justice Brett] Kavanaugh nomination,” McSally’s team wrote. “This segment of moderate Republicans, especially woman [sic], proved very difficult to bring home to a Republican candidate that supported President Trump and the confirmation of Justice Kavanaugh.”

Arizona Republicans said Ducey is also considering state Treasurer Eileen Klein (R) to fill Kyl’s seat. Ducey appointed Klein, a former president of the state Board of Regents and chief of staff to former Gov. Jan Brewer (R), to the treasurer’s post after her predecessor stepped down to take a job in the Trump administration.

Also on the list is Kirk Adams, a former Speaker of the state House of Representatives and Ducey’s first chief of staff.

Kyl, whom Ducey appointed after Sen. John McCain John Sidney McCainThe Memo: Trump's strengths complicate election picture Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' Cindy McCain: Trump allegedly calling war dead 'losers' was 'pretty much' last straw before Biden endorsement MORE (R) died earlier this year, said Friday he will resign from office effective Dec. 31.

Those close to Ducey said he is unlikely to make his deliberations public. Ducey kept his decision to appoint Kyl contained to just a small handful of staffers and advisers before making a public announcement after McCain’s funeral.

Whomever Ducey chooses will have to defend the seat in two years. Several prominent Democrats have already said they are considering bids in a state that has trended slowly to the left in recent years, including Rep. Ruben Gallego Ruben GallegoHispanic caucus report takes stock of accomplishments with eye toward 2021 Senators call on Pentagon to reinstate funding for Stars and Stripes newspaper Hispanic Caucus campaign chief to mount leadership bid MORE (D) and Grant Woods, the former Republican attorney general who served as McCain’s chief of staff in the House.