Case Study: Does Upvoting a Review on Google Help it Show Up Higher?
https://www.sterlingsky.caIn this test, they wanted to see if upvoting a review on Google impacted where the review showed up so they did a test on this for a client who had a negative review being highlighted in his knowledge panel. They got multiple people upvote a specific review that was left by a well-established Local Guide to see if we could get that review to replace the one that was displaying in the Knowledge Panel.
They found that upvoting the review had no impact on the order of the reviews, or which reviews were chosen to be displayed in the Knowledge Panel. Check out the post for the full breakdown.