Don Black, director of the white nationalist Web site Stormfront, said in an interview that several dozen of his members were volunteering for Mr. Paul’s presidential campaign, and a site forum titled “Why is Ron Paul such a favorite here?” has no fewer than 24 pages of comments. “I understand he wins many fans because his monetary policy would hurt Jews,” read one.

Far-right groups like the Militia of Montana say they are rooting for Mr. Paul as a stalwart against government tyranny…

The white supremacists, survivalists and anti-Zionists who have rallied behind his candidacy have not exactly been warmly welcomed. “I wouldn’t be happy with that,” Mr. Paul said in an interview Friday when asked about getting help from volunteers with anti-Jewish or antiblack views.

But he did not disavow their support. “If they want to endorse me, they’re endorsing what I do or say — it has nothing to do with endorsing what they say,” said Mr. Paul, who is now running strong in Iowa for the Republican nomination…

Mr. Black of Stormfront said the newsletters helped make him a Ron Paul supporter. “That was a big part of his constituency, the paleoconservatives who think there are race problems in this country,” Mr. Black said.