What Was the Last Legal Challenge to Indian Voting Rights?

In 1962, Democrat Joseph A. Montana tried to revive the old residency issue and take the vote away from Diné (Navajos) in New Mexico.

He was running for lieutenant governor and knew that over 2000 votes had come from the Navajo reservation, voting for his rival.

In the end, the court ruled that the reservation was a part of the state and Indians had the right to vote.