An initiative that will be on the ballot in the upcoming election aims to create transparency on campaign donations.
Proposition 211 would require identifying contributions of more than $5,000 from organizations that spend more than $50,000 on statewide campaigns.
The measure has drawn criticism from the Arizona Free Enterprise Club President Scot Mussi, who argues it could lead to people not wanting to donate because their names would be revealed.
"You're talking about private citizens giving to private organizations. That's what we're talking about here, not the act of somebody has given money to a candidate," Mussi said.
Initiative author and former state Attorney General Terry Goddard says evidence for harassment is low as statutes require public disclosure of anyone who makes $50 contributions directly to candidates.