Robert F. Kennedy Jr.’s zombie campaign is lurching toward Election Day in a characteristically erratic fashion. The independent candidate suspended his run for the White House and endorsed Donald Trump last month, and has since been trying to cherry-pick in which states his name will appear — and not appear — on ballots.

Kennedy presented a bizarre plan when he ended his campaign, claiming that he would be removing his name from contention in critical swing states where his candidacy might spoil a victory for Trump, but would remain a candidate...