Arizona voters approved a campaign finance ballot measure requiring disclosure of original campaign donors.

Proposition 211 requires that anyone making independent expenditures of more than $50,000 on a statewide campaign or $25,000 on a local campaign to disclose the names of the money’s original sources, defined as the persons or businesses that earned the money being spent.

Organizations that fail to disclose would face a fine equal to the amount contributed, or up to three times that amount.

Proposition 211 applies to corporations, nonprofit groups and charities that currently are not required to disclose the names of the people who give money to political campaigns that the organization backs.

As of 8:15 a.m. November 9, with 59% of the precincts reporting, the amendment passed 72.7% to 27.3%.