The U.S. Court of Appeals for the 1st Circuit upheld Rhode Island’s campaign finance law requiring the identification of donors in political advertisements.

The state law requires disclosure of independent expenditures totaling more than $1,000 to the Board of Elections with a listing of the candidate or referendum involved and all individual donors who gave more than $1,000.

The top five donors must also be listed in the ad itself.

The groups challenging the constitutionality of the law said they would appeal the issue to the Supreme Court