This market will resolve YES if Des Moines news sources report that nurses of UnityPoint Health successfully voted to unionize. Otherwise, it will resolve NO.
"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
1,000Vote count is official according to NLRB
https://www.tdu.org/nlrb_confirms_1_700_unitypoint_nurses_voted_to_join_teamsters_in_des_moines
https://www.weareiowa.com/article/news/health/unitypoint-des-moines-nurses-union-claims-victory-bernie-sanders/524-1897c206-e634-453a-894d-a8a7e7bcddc1
Original resolution criteria is based on local news sources, which say that the case is still open
https://www.nlrb.gov/case/18-RC-371855
Iowa's UnityPoint files objection to union vote as dispute drags on
Close call with ballots challenged:
https://www.kcci.com/article/unitypoint-nurse-union-vote-undetermined/69690858