You are NOT required to rank all 5 choices for the ballot to be valid! A single bubble filled in will be counted. The voter guide and voter instructions explicitly mention this in multiple places. What grandparent comment meant was that if more progressive voters who only ranked 1 candidate had also ranked Kathryn Garcia in any position 2-through-5 (and ranked Adams below or not at all), then maybe Garcia would have won. Voters who only rank 1 candidate are missing out on the full power of their ranked choice vote if their 1st-and-only candidate is eliminated early.
You are NOT required to rank all 5 choices for the ballot to be valid! A single bubble filled in will be counted. The voter guide and voter instructions explicitly mention this in multiple places. What grandparent comment meant was that if more progressive voters who only ranked 1 candidate had also ranked Kathryn Garcia in any position 2-through-5 (and ranked Adams below or not at all), then maybe Garcia would have won. Voters who only rank 1 candidate are missing out on the full power of their ranked choice vote if their 1st-and-only candidate is eliminated early.