Minor party candidates have the same standing as major party candidates in this matter.
The established principle that operates for any candidate that did not obtain in the prior cases is embodied in the phrase from previous decisions:
“capable of repetition yet evading review”
Read the decision from when I won cert in Al Hopfmann’s case about the Massachusetts 1982 senatorial primary when he was kept of the ballot against Ted Kennedy although he qualified under state law. Hopfmann v. Connelly. You could look it up.
On Fox news, a few days to a week or so back, there was a very brief comment to the effect that Joe Biden had not yet resigned his senate seat.
There was discussion that he was the first elected vp not to do so.
That made me wonder if Joe Biden knows something?