At the party congress in 1906, the party swung back to the isolationist stance and the congress passed a resolution saying that the party should never engage in electoral alliances with other parties. Hornsrud did not candidate for a new period as leader, and was replaced by Oscar Nissen. He had become partly disillusioned with political work due to internal strifes and accusations that he was a "minister socialist" with too much sympathy for the Liberal party and seeking too much power in this own hands. He did not attend any more party congresses for a long time.