Lincoln Chafee: The current governor of Rhode Island was elected as an independent in 2010 after serving as a Republican U.S. senator for seven years. He became a Democrat in 2013, but is not running for re-election.
Claude Kirk: Switched from the Democratic to the Republican Party and led the "Floridians for Nixon" campaign in 1960. Elected governor in 1966, the first Republican to win the governorship since 1872. After losing re-election in 1970, he switched back to Democrat and lost primaries in 1978 (governor) and 1988 (U.S. Senate). He then rejoined the GOP and lost 1990 race for education commissioner.
Fob James: Elected Alabama governor as Democrat in 1978 and re-elected as a Republican in 1994.
Walter Hickel: Elected Alaska governor as Republican in 1966 and re-elected governor as an independent in 1990.
Lowell P. Weicker Jr.: Elected to the U.S. House in 1968 as a Republican but won election as governor of Connecticut as an independent in 1990.
Buddy Roemer: Elected Louisiana governor as Democrat in 1987; switched to Republican in 1991 but lost re-election bid.
Mills Godwin: Elected Virginia governor as Democrat in 1965 and re-elected as a Republican in 1973.
Philip LaFollette: Elected Wisconsin governor as Republican in 1930; lost 1932 GOP primary. Was re-elected governor as a member of the Wisconsin Progressive Party in both 1934 and 1936.
Compiled by Times researcher Caryn Baird with information from Times wires and NGA.org