A Democratic congressional candidate who criticized the influence of “special interests” consulted for an organization in Washington, D.C., linked to left-wing dark money groups, according to financial disclosures.

Curtis Hertel, a Democrat running in a competitive House race to fill a seat that is vacant due to Rep. Elissa Slotkin (D-MI) deciding to run for Senate, reported on his 2024 candidate financial disclosures that he earned $20,000 in the preceding year to consult for Inseparable. The mental health policy organization, which houses a 501(c)(4) nonprofit group that does not disclose its donors to the IRS, was formed by top staffers at a D.C.-based firm called Civitas Public Affairs Group that has Democratic dark money ties.