The West Virginia Secretary of State has put Frank Deem on the Republican primary ballot, for State Senate, 3rd district, after first having told him he could not appear on that ballot. See this story, which was written before the Secretary of State put him on the ballot. The primary is May 8.
West Virginia has multi-member State Senate districts. When a Senate district has two Senators, one is up for election in presidential years, and the other is up in mid-term years. The West Virginia Constitution says when a Senate district is composed of several counties, no more than one resident of any particular county may serve. The Secretary of State originally rejected Deem because the 3rd State Senate district already has one Senator from the county that Deem lives in. Deem argues that the state Constitution violates the U.S. Constitution, and apparently his argument was convincing enough to persuade the Secretary of State to let him run. No Democrat filed in the 3rd district, so if Deem wins his primary, he is virtually certain to be elected, and then the issue may go to court. Thanks to Bill Van Allen for the link.