Question: The 17th Premier of Nova Scotia and leader of the federal Progressive Conservative Party of Canada Robert Stanfield fought a few times and lost in general elections against which politician who is currently one of the longest-serving Prime Minister in Canadian history?
Sentence (from "Blue Tory"): Prior to the 1960s, these Conservatives were most identified with the Montreal and Toronto commercial elite who took positions of influence within the Progressive Conservative Party.
Relevant evidence: No