It’s turned into a political whodunit.

Questions continue to swirl around an 83-year-old Long Island grandmother whose mysterious presence on the Working Families Party line in the Huntington supervisor’s race tipped the scales in the election with the voters who signed her petition nowhere to be found.

Public records show that the town employee listed as a witness on the party petition for granny Maria Delgado hasn’t lived at his listed Greenlawn address for at least four years — and the folks living there now told News12 Long Island they never signed it.

Meanwhile, the Huntington Manor fire commissioner, who also signed, has yet to turn up.

“Unless the law requires the board to invalidate a petition, it is deemed valid and the candidates named are placed on the ballot,” Suffolk C

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