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 "Robert Stanfield"): Robert Lorne Stanfield, PC, QC (April 11, 1914 – December 16, 2003) was the 17th Premier of Nova Scotia and leader of the federal Progressive Conservative Party of Canada.
Relevant evidence: Yes