A Democratic group that spent thousands of dollars backing a since-failed tax proposal supported by Gov. Jared Polis (D-CO) will soon disclose its donors and pay a fine as part of a settlement over campaign finance law violations, according to documents.

Boldly Forward Colorado, a group that, as a 501(c)(4) nonprofit organization, is not required to report its donors to the IRS, agreed with state investigators to pay a more than $18,000 fine and submit paperwork listing its contributors in 2023, a settlement agreement stated. Boldly Forward Colorado is legally allowed to fund ballot measures, but the $350,000 it spent in 2023 supporting Proposition HH was determined to be above a certain threshold permitted by a 501(c)(4), meaning it should have registered as an issue committee and publicized its fundraising and expenses, state officials said.