What about the likely Class 3 special election in 2018 or 2020? Might this seat go to a Democrat?
Also much, much likelier at this point, although we'd need the right candidate (Gallego and Stanton come to mind). I doubt this is going to affect Ducey's political prospects much - he's not a great governor, but he isn't an idiot either - but pardoning Arpaio might be one of Trump's most baffling self-inflicted foot-shots yet. This state was already turning against him, and now he's all but guaranteed the flip by alienating Maricopa County.