MacKay was born to a citrus-farming family in Ocala, Florida, the son of Julia Elizabeth (Farnum) and Kenneth Hood MacKay.[1] He served in the United States Air Force during the 1950s, and then attended the University of Florida, where he was tapped into Florida Blue Key and eventually received a law degree. MacKay was inducted into the University of Florida Hall of Fame (the most prestigious honor a student can receive from UF) and was a member of The Board. He married Anne Selph[2] in 1960; the couple has four sons.
MacKay won the 1990 Democratic primary for lieutenant governor on the ticket headed by former U.S. Senator Lawton Chiles, who had held the Senate seat MacKay had unsuccessfully sought two years earlier. They won the election and were re-elected in 1994, the latter campaign being a close contest against the Republican ticket headed by Jeb Bush.
As lieutenant governor, MacKay was co-chair of the Florida Commission on Education, Reform and Accountability.[3] He was regarded as the most significant and powerful lieutenant governor in Florida's history.[4]
MacKay was a strong supporter of the use of capital punishment, as was Chiles. When he was asked during the 1998 gubernatorial election campaign about his positions on use of the death penalty and electric chair in Florida, he replied: "I support the death penalty and support the use of the electric chair so long as it operates in a reliable fashion."[5] However he suggested that Florida should change its mode of execution after Pedro Medina's botched execution, saying: "The last thing we want to do is generate sympathy for these killers."[6]
Despite his defeat, MacKay became Chiles' successor when Chiles died unexpectedly on December 12, 1998. MacKay was at this time in Boston with his wife. When they returned to their hotel room, they found a message about Chiles' death, asking MacKay to get on a plane to Atlanta, where they were picked up by a state crew and flown through thick fog to Tallahassee. At 12.30 a.m. the next day, the 65-year-old MacKay was sworn in as Florida's 42nd governor at his Capitol office for the 24 days remaining in Chiles' term.
"There's no great pleasure in this," said MacKay about taking a job he had sought, but got for a short time after his political partner's death. He also stated how sorry he was that he would be unable because of the short time and lack of mandate to take care of such issues as education and health care.[4]
Despite keeping a low public profile during his time as governor, MacKay made at least 56 appointments to various boards and to various offices, including two judgeships. He granted six pardons to female prisoners and was involved in such issues as the negotiation plan for the Everglades, and moderated some other disputes.[9] Perhaps his most visible act as governor was signing Peggy Quince's nomination to the Florida Supreme Court. Quince was Chiles' last pick for the bench and it fell to MacKay, and then Bush, to sustain her nomination.
After his governorship ended, MacKay retired from active politics. He, however, remains publicly active.
He was appointed by President Clinton as a special envoy for the Americas, being the second person to hold this position. During his tenure he traveled to 26 countries in the Americas, working on issues such as the Free Trade Area of the Americas (FTAA), the North American Free Trade Agreement (NAFTA), the Caribbean Basin Initiative (CBI), hemispheric security, strengthening the rule of law, labor standards, environmental policies and human rights.[10]