"Upon careful consideration, I have terminated my relationship with the Lincoln Project, effective immediately," Horn told the New York Times.
Horn resigned amid a scandal surrounding the allegations of sexual harassment made by 21 men against John Weaver, another co-founder.
"John Weaver's grotesque and inappropriate behavior, coupled with his longstanding deceptions concerning that behavior, are sickening. It is clear at this point that my views about how the Lincoln Project's efforts are managed, and the best way to move the Lincoln Project forward into the future in the wake of these awful events, have diverged.''
The organization quickly responded with the following statement:
"Forty-eight hours ago, at a moment when the Lincoln Project was under attack from the Trump organization and their propaganda allies, Jennifer Horn, in written communication, requested from the Lincoln Project an immediate 'signing bonus' payment of $250,000 and a $40,000 per month consulting contract,"
"This followed a Christmas Eve communication from Jennifer, where she demanded a board seat from the Lincoln Project, a television show, a podcast hosting assignment, and a staff to manage these endeavors. She also stated her goal was 'to establish immediate and long-term financial security,'" the statement continued.
"These demands were unanimously rejected by the management committee and board. We immediately accepted Jennifer Horn's resignation from the Lincoln Project."