Stephen J. Farnsworth, a political scientist at the University of Mary Washington, said that in the past three decades the 9th District may have seen the biggest political shift of any district in Virginia. “Thirty years ago, when there were still many jobs in mining, there was a much stronger Democratic presence in the 9th, and more competitive elections,” he said. “The current version of the 9th is very hospitable to Republicans, and nobody calls it the ‘Fighting Ninth’ anymore.”