Nurse Contract 

Balloting by 870 registered nurses represented by the Maine State Nurses Association will continue Friday, with results to be announced that night.

After their three-year contract expired, nurses issued a 10-day strike notice Monday, but withdrew it the following day when the two sides entered an emergency bargaining session with a federal mediator. The union won’t say if rejection of the contract would automatically lead to another strike notice.

The key issue is the makeup of a &quot:professional practice committee&quot: that would give direct-care nurses more input into staffing and other issues.