David Ernest Duke (born July 1, 1950) is an American white nationalist, antisemitic conspiracy theorist, far-right politician, and former Grand Wizard of the Ku Klux Klan. A former one-term Republican Louisiana State Representative, he was a candidate in the Democratic presidential primaries in 1988 and the Republican presidential primaries in 1992. Duke unsuccessfully ran for the Louisiana State Senate, United States Senate, United States House of Representatives, and Governor of Louisiana.