A Vermont Superior Court judge says a Democratic Party advocacy group violated state campaign finance laws last fall.
The attorney general’s office took the group Green Mountain Future to court after the election.
The organization was primarily funded by the Democratic Governors’ Association and spent more than $500,000 in September and October.
The state says Green Mountain Future failed to register with the secretary of state and didn’t file disclosure reports.
Green Mountain Future countered that Vermont’s campaign finance law was unconstitutional, but the court rejected that argument.
The state also took the Republican Governors Association to court. That case is still pending.