A contender to receive Gov. Doug Ducey’s appointment to serve as Arizona’s next senator was sharply critical of President Trump during the 2016 campaign.

Maricopa County Attorney Bill Montgomery is on Ducey’s list of possible appointees as he mulls who to choose to succeed Sen. Jon Kyl, R-Ariz., whom the governor appointed on an interim basis to replace Sen. John McCain after the iconic Republican died in office in August. But Montgomery, a Republican, could have a Trump problem in the way of critical tweets.