via 538, https://projects.fivethirtyeight.com/biden-approval-rating/

This market will resolve YES, if at any point in 2023, Biden's Approval Rating will be below 37.5

This market will resolve to the bold line as indicated at the 538 chart. In case of a tie, detailed data to calculate averages will be used to resolve.

Please note, there is a second very similar market that uses 37.6% as the line.

The Life of Biden