If you pose a series of polls that do not have an option of No Mask.

If you pose a series of polls that offer Masks or Lockdowns.

If you pose a series of polls that ask "would you wear a mask to protect Grandma" while not asking if you agree with mandatory masks in general.

If you ensure your targeted demographic during each polling is University Students, Health Care Workers, Government Workers etc.

and so on and so on.

Google isn't the only one that knows all and sees all that we consume. If everything you browse, search and view becomes your advertisements, so shall the polling.

Trust the algorithm... it is unbiased...

The person who contracted it is biased but the "client" pays the bills and is always right.