David Duke was a democrat- and a was a Republican.
But it was as a Republican that he was elected to office.
In December 1988, Duke changed his political affiliation from the Democratic Party to the
Republican Party.
[3]
In 1988, Republican State Representative
Charles Cusimano of
Metairie resigned his District 81 seat to become a 24th Judicial District Court judge, and a
special election was called early in 1989 to select a successor. Duke entered the race to succeed Cusimano.... Duke, with 8,459 votes (50.7%) defeated Treen, who polled 8,232 votes (49.3%).
[41] He served in the House from 1989 until 1992.
[42
He ran as a Republican for among other offices, Governor, Senator and Congress.