However, supporters convinced him to run for Governor of Florida in 1990 against the unpopular incumbent Bob Martinez, and Chiles defeated Martinez by a 13-point margin (56.5% to 43.5%). During his first term as Governor of Florida, Chiles reformed health care and oversaw recovery efforts from Hurricane Andrew in 1992. Chiles faced a tough re-election bid in 1994 against Jeb Bush, a businessman and son of former President George H. W. Bush. Chiles prevailed over Bush by fewer than 64,000 votes. During his second term, Chiles reformed education in Florida. On December 12, 1998, he suffered a heart attack and died at the Florida Governor's Mansion, leaving Lieutenant Governor Buddy MacKay to serve the remaining 23 days of Chiles' unexpired term. Jeb Bush succeeded MacKay.