On September 4, some noted election law professors filed an amicus in the 9th circuit in Tedards v Ducey, 19-16308. This is the case over whether Arizona can wait until November 2020 to hold an election to replace U.S. Senator John McCain. He died in August 2018. The professors are Erwin Chemerinsky, Helen Hershkoff, Alexander Keyssar, Lawrence Lessig, and Sanford Levinson. UPDATE: Here is the amicus. The amicus is on the side of the people who feel the Constitution requires a special election before November 2020.