...The League of Women Voters?
https://www.readfrontier.com/league-of-women-voters-forum-happening-with-or-without-bartlett/
Incumbents typically prefer fewer debates and challengers prefer more. Incumbents are usually a known quantity with a record to run on (or against). Incumbents have little to gain and much to lose. Challengers want the opportunity to confront and attack the incumbent and share a stage, which tends to elevate his/her stature. As a voter, I prefer more candidate debates and forums, but I see why Bartlett does not.
This debate says that all the candidates are invited. All the candidates including Paul Tay.
I don't blame Bartlett for having hesitation on this one.