A Georgia effort to dump voting machines that Donald Trump hates may get derailed by fear of a chaotic last-minute shift in election methods.

MARIETTA, Ga. – Election officials are investigating the actions of a Florida lawyer who they say tried to register to vote in a high-stakes runoff in Georgia that will decide control of the U.S. Senate. Moving to Georgia just to vote — with no intention of staying in the state afterward — can amount to a felony, Georgia Secretary of State Brad Raffensperger said in a statement Thursday announcing the investigation. The lawyer went online and attempted to register to vote using the address of his brother in Hiram, Georgia, said Deidre Holden, the elections supervisor in Paulding County, Georgia. “This is not about Republican or Democrat — this is about doing what’s right,” Holden told The Associated Press on Thursday. But Holden said she’s interested in learning whether any other out-of-state residents tried to register in Georgia after being encouraged to do so at the Florida rally.