First Debate of the 2023 Mayoral Election in Portland on 9/20 Posted on September 18, 2023 by Munjoy Hill News The first debate of the 2023 Mayoral Election in Portland is to be held on Wednesday, October 20, 2023 at the Portland Public Library It runs from 7:00 pm – 8:30 pm. Doors will open at 6:30 pm. Its free and open to the public.