Less than 48 hours after it passed with nearly two-thirds of the vote, a ballot initiative aiming to remove dark money from Montana drew a legal challenge, setting up a question as to whether it is constitutional. The Washington-based Institute for Free Speech filed the lawsuit in U.S. District Court in the District…

On the same day that voters approved a ballot initiative that disallows corporate spending in Montana elections, several groups — including the Montana Republican State Central Committee — filed a lawsuit challenging the constitutionality of the measure. Several people involved in organizing efforts for Initiative 194…