This market will resolve YES if Des Moines news sources report that nurses of UnityPoint Health successfully voted to unionize.

"Nurses will vote on whether to form the union Dec. 7-9. A majority of 51% is needed. Votes will be counted Dec. 10."
https://www.kcci.com/article/unitypoint-nurses-des-moines-union-vote-unite-teamsters/69610071