There is likely a MI law that has an Oct 15 deadline, or some other reference that the author incorrectly took to be controlling.
-- the fact that the candidates are those identified by the "national news media" is silly beyond belief. --
I had the same reaction. Seems there is a two step process though, with the deadline for the parties being a week after that "take it from the news reports" deadline to the MI Secretary of State.
There is likely a MI law that has an Oct 15 deadline”
It’d be great if a freeper who is a research whiz could nail that down....