U.S. Senator Steve Daines (R-Montana) in this article responds to criticism that he didn’t tell anyone that he was retiring until minutes before the primary filing deadline closed. See this story.
Fortunately, in 2012, an independent candidate in Montana won a federal lawsuit against the old petition deadline for independent candidates. Kelly v McCulloch, cv-08-25, struck down the old independent candidate petition deadline, which had been the same day that primary candidates file. The legislature then changed the independent deadline to one week before the primary. That gives a chance for an independent candidate to enter this year’s Senate race.