BTW: "Checklist 6.4.3 Auxiliary widgets" mention this case:
Some pages include unsupported widgets that are not essential for the understanding of the article. ... Some websites include “And what would you do?” votes at the end of some of their articles to increase user engagement.
Since there's no way to determine whether the poll is essential or not, all pages with polls must be unsupported
Type of issue
IV generated for non-target page
Reported
Feb 13, 2019
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This site often place polls at the article. In most cases this is not an essential content:
https://tverigrad.ru/publication/novaya-krysha-starojj-kormushki-ili-kak-administraciya-tveri-poteryala-dengi-i-kontrol-nad-rynkom-na-ulice-ordzhonikidze
So I think marking it unsupported is a bad idea since we have no reliable way to check essentiality of polls.
BTW: "Checklist 6.4.3 Auxiliary widgets" mention this case:
Some pages include unsupported widgets that are not essential for the understanding of the article.
...
Some websites include “And what would you do?” votes at the end of some of their articles to increase user engagement.