"Vote" button in Poll object was translated into Russian as "Оценка" (Rating or Estimation in Russian)   This tranlate is suitable only for limited range of questions, like "Estimate please..." of "Do you like...?"

But if you use "Оценка" fore the question "What is your purpose of visiting our website..." - this translation contains a semantic error.

The direct translation of "Vote" is "Проголосовать"  but it is too long and also does not match some cases.

The best translation that does not contain an obvious semantic violation  is "Ответить" - an incentive form of Answer or to make button label shorter - just "Ответ" - Answer. We have questions in our poll - so we ask to give answers.  That will be a correct button label in Russian.