Former Attorney General Terry Goddard launched an effort to prohibit the use of dark money in political campaigns.

The proposed constitutional amendment, called The Voters Right to Know Act, seeks to require anyone spending at least $5,000 to influence the outcome of an Arizona election to disclose the original source of the money.

The disclosure requirement would apply to both state and local elections in Arizona.

In order for the proposal to appear on the ballot in the 2020 general election, the campaign committee behind the citizen initiative will need close to half a million signatures.

Last year, the same campaign committee missed qualification for the ballot by just over 2,000 signatures.

The amendment would require the Citizens Clean Elections Commission to enforce the new campaign finance disclosure rules and exempt the commission’s anti-dark money rules from oversight by the Governor’s Regulatory Review Council.

The proposal coincides with current Attorney General Mark Brnovich investigating whether Tempe’s ordinance banning dark money violates a law passed last year banning cities from enacting their own dark money disclosure regulations.