Duke first ran for the Louisiana State Senate as a Democrat from a Baton Rouge district in 1975. In 1979, he ran as a Democrat for the 10th District Senate seat and finished second in a three-candidate race with 9,897 votes (26 percent).
In 1988, Duke ran initially in the Democratic presidential primaries.
He then changes party affiliation (but was first a Democrat)
In December 1988, Duke changed his political affiliation from the Democratic Party to the Republican Party.
I suspect you looked at the first sentence of the Wiki on Duke and ran with that ignoring the Nazi party history and foundations as well as those precepts.
Duke is trying to ride the ‘push back’ from conservatives on many of the social programs and the feeling from some conservatives that these social programs have gone too far. He is definitely a chameleon..
In 1990 syndicated columnist Jack Anderson argued Duke has done “everything to make himself look better to the voters, including plastic surgery”.
to which Duke had countered:
Duke explained in My Awakening that he had had reconstructive surgery on his nose, which had been broken many times.
Remember the earlier statements on Fascism?
Though normally described as being on the far right, there is a scholarly consensus that fascism was also influenced by the left, but with a focus on solutions from the right. – from Wiki.