The number of MPs belonging to this group was rather small at first, but it gained influence as the military situation worsened.
After the signing of armistice, Paasikivi established his cabinet, which included members of the previous opposition group.
Paasikivi, the leading statesman of the group had concluded by 1943 that Germany was going to lose the war and Finland was in great danger.
Negotiations were conducted intermittently in 1943–44 between Finland and its representative Juho Kusti Paasikivi on the one side, and the Western Allies and the Soviet Union on the other, but no agreement was reached.
Immediately after the ceasefire, Mannerheim appointed Paasikivi, so far leader of the Peace opposition, as the Prime Minister.