Just a clarification here that this was a 'panel' of the 10th operating (remotely) out of Salt Lake City. The logical 1st choice in the on-going process would be to petition the ENTIRE 10th Court ('En banc') for a decision before going to the 'Supremes'!
Correct. Most Court of Appeals actions begin with a 3 Judge panel which may expand to an en banc review, or it may skip this step and go straight to the SCOTUS. In this case, one of the members of the 3 judge panel died, leaving 2 judges on the panel. Since their vote was 2-0, the opinion was allowed to stand. Given how the Courts have dealt with voter eligibility issues, this may be over.