 During the Mike Duffy expenses controversy and other expense scandals related to the Senate of Canada, the NDP reasserted its longstanding position that Senate should be abolished.Mulcair promised to seek a mandate for Senate abolition during the 2015 Canadian federal election even though the Supreme Court had ruled in 2014 that abolition would require the consent of all ten provinces.Nevertheless, following the election of Justin Trudeau as leader of the Liberals in April 2013 the political fortunes of the NDP appeared to be on the decline, with the party falling back to its traditional third place in public opinion polls.