That is exactly what happened in Michigan.
Democrat Haley Stevens lost the Senate primary to Abdul El-Sayed.
Normally, that is where the story ends.
Instead, Stevens has now endorsed Republican Mike Rogers, the man running against El-Sayed in the general election.
And the timing makes it even stranger: the endorsement came just days before Election Day.
Stevens had previously said she would support the Democratic nominee, so the reversal immediately became one of the most talked-about moments of the final campaign weekend.
Her longtime chief of staff even resigned after the announcement.
Whatever happens in Michigan, this may be one of the strangest examples this year of a primary rivalry surviving all the way into the general election.
Lose the nomination. Skip party unity. Endorse the opponent.
