BOISE, Idaho -

A state court judge plans to rule within hours on whether a nonprofit group must disclosure donors behind more than $200,000 that paid for campaign ads touting public schools chief Tom Luna's education overhaul.

Fourth District Judge Michael Wetherell told lawyers for Education Voters of Idaho and Secretary of State Ben Ysursa to expect a ruling before 5 p.m. Monday.

Ysursa's attorney told Wetherell speedy disclosure of EVI's donors was paramount because voters now going to the polls to weigh in on Luna's changes need to know who is financing the group.

EVI's attorney Christ Troupis argued Ysursa's office is singling out his client in an unprecedented use of Idaho's 38-year-old Sunshine disclosure law.

Regardless of how Wetherell decides, the case likely will be appealed to the Idaho Supreme Court.