Following in the family footsteps, three of Griffin's grandchildren have served in elected political office in Florida. Republican Katherine Harris, a former member of the Florida Senate, former Florida Secretary of State (best known for her role in the disputed 2000 presidential election), and former United States Representative from Sarasota, is Griffin's granddaughter. Republican J.D. Alexander, a former member of both the Florida House of Representatives and Florida Senate, is his grandson. Republican Baxter Troutman, a former member of the Florida House of Representatives, is also Griffin's grandson.