The loss of these seats to the breakaway Rhodesian Action Party, which opposed any conciliation with black nationalists, meant that Smith now only barely had the two-thirds majority in parliament he would need to change the constitution, as he would have to in the event of a settlement. He therefore called an early election, and on 31 August 1977 roundly defeated the defectors—"the dirty dozen", the RF called them—as well as all other opposition; for the third time in seven years, the RF had won all 50 white seats. The party revolt turned out to be a blessing in disguise for Smith, Berlyn comments, as it allowed him to "shed the dead wood of the right wing", giving him more freedom in negotiations with the nationalists. The need for a settlement was becoming urgent—the war was escalating sharply, white emigration was climbing and the economy was starting to struggle as the UN sanctions finally began to have a serious effect.