You're probably right. It's interesting that Pat wanted the Republican Party to court the Duke supporters. After all, Duke's right on some issues :
To change the subject slightly, I think that this association between Buchanan-type conservatives and the anti-Semitic far right is one of the most important answers to the question "Why do Jews vote for Democrats in such overwhelming numbers?" Jewish Americans who lived through WW2 (in their 70's today) remember the flirtation between isolationists on the far-right at the time and those who actually supported the Nazis at the time like the Bund outfits on the Upper East Side of NYC in Yorkville.
Philip Roth has written a paranoid fantasy about what might have happened if Charles Lindbergh had been nominated for the Republican Party instead of Wendell Willkie in 1940. Its very revealing of how much fear there was among the Jews of the time regarding the isolationist America First types of the time that Roth is still freaked out about it 60 odd years later.