The Teachers Union is weighing in on the Mayoral race even though offices operate separately. My guess without reading the full article because I am too cheap to subscribe (I will get a paper later) will be speculation based on years of seeing this happen over and over.
My guess would be that the questionnaire will have questions about Trans bathroom stuff and private / charter school funding. The candidate who says they support charter/voucher private school will be smeared as "stealing money from schools." If they are not for Trans, bathrooms, they are Hitler/Trump.
This is the same Union who refused to protect teachers and students after multiple violent attacks at nathan Hale Utopian Indoctrination Center. OPS wanted to open a new alternative school to keep teachers and students from being stabbed and beaten using a private company. You see the Union was worried about their turf not their teachers. The Union said "no private" school leaving teachers (they represent) in danger from uncontrollable, violent students. Waaaaa! Now they want to tell you who should be Mayor? Their endorsement would be like venereal disease.