In the past two years, Mr. Cobb, a longtime proselytizer for white supremacy who is wanted in Canada on charges of promoting hatred, has bought a dozen plots of land in Leith (pronounced Leeth) and has sold or transferred ownership of some of them to a couple of like-minded white nationalists.

He is using Craigslist and white power message boards to entice others in the movement to take refuge in Leith, about two hours southwest of Bismarck. On one board, he detailed his vision for the community — an enclave where residents fly “racialist” banners, where they are able to import enough “responsible hard core” white nationalists to take control of the town government, where “leftist journalists or antis” who “come and try to make trouble” will face arrest.

The revelations have riveted this community and the surrounding area, drawing a range of reactions from disgust to disbelief to curiosity.

“If that man wanted to live in Leith and be a good neighbor and be decent and not push his thoughts on the people, then he could live there,” said Arlene Wells, 82, a farmer and local historian. “But to come in and want to change everything and be the big dog — no. I don’t like bulldogs.”

It is all people are talking about, in bars and in their homes, at funerals and at church. They are poking around on the Web to read Mr. Cobb’s positions for themselves. A stream of cars creep through the streets where horses occasionally trot, their passengers hoping to catch a glimpse of some action or take a peek at Mr. Cobb’s peeling, two-story clapboard home. Sheriff’s cars, too, are making more rounds.