No. Nurses working at any Essentia Health ambulatory clinic would not automatically get anything different or better simply as a result of electing the union. Changes to terms and conditions of employment may only come as a result of the give-and-take process of collective bargaining.
If nurses at any Essentia ambulatory clinic elect the MNA, then Essentia and the MNA would bargain a separate new contract for the new bargaining unit of nurses at that clinic.