George P. Bush, the son of GOP presidential candidate and former Florida Gov. Jeb Bush, will campaign for his dad in Aiken on Saturday. George P. Bush will stop at the Green Boundary, 780 Whiskey Road, from 1 to 3 p.m. The event is open to the public. George P. Bush, who serves as the commissioner of the Texas General Land Office, is also the grandson of former President George H. W. Bush and the nephew of former President George W. Bush.