Because these positions to a great extent cut across ideological boundaries, various political parties have dealt with the issue in different ways. The Centre Party has maintained the most principled stand against membership, and though parties such as the Norwegian Conservative Party and the Norwegian Labour Party support membership in their platform, they allow for a minority to oppose it. Most dramatically, the Norwegian Liberal Party split over the issue in 1972 at the famed party conference in Røros and did not reunite until 1989.