The republicans did this in Illinois. There was a district based in Lake County that was heavily republican but was mostly moderate to liberal Chuck Percy type republicans. Yet they would vote for ted bundy if it had an R next to its name. In 1969, they voted in archconservative Phil Crane. It took the voters 35 years to realize that a nutcase was representing them.
You do realize "that district" has been three different Congressional Districts over the years? First it was the 13th, then it became the 12th, and then it became the 8th. Phil Crane didn't survive because the people in the district would vote in Hitler with an R, he survived because his district KEPT CHANGING.