Thompson received a Bachelor of Arts from Brandon College, which he attended with Tommy Douglas and Stanley Knowles in the late 1920s. On graduation, he went on to study law at the University of Manitoba, graduating in 1933 with an LLB. While there he was a member of the top debating team with his debating partner and the future Co-operative Commonwealth Federation leader Lloyd Stinson. After graduation, he settled back in Elkhorn and built up his law practice. Active in the Elkhorn community, Thompson was a municipal councillor from 1933 to 1939. Turning to national politics, he campaigned in the 1940 federal election as a "National Government" candidate, but lost to the Liberal, James Ewen Matthews. Shortly after marrying Lorraine Dutton of Virden in 1942, Thompson joined the Royal Canadian Air Force and for three years was a leading airman during the Second World War. After the war, Thompson again focused on local politics in Elkhorn and was elected as a school trustee from 1945 to 1947, and then spent six years as Mayor of Elkhorn from 1947 to 1953.
Thompson was first elected to the Manitoba legislature in the June 1953 provincial election as the Progressive Conservative member for Virden. Despite the Liberal-Progressives winning a majority under Douglas L. Campbell, Thompson, with 57% of the vote, had defeated G.A. Mooney to become the first Tory to serve Virden since 1914. Joining the opposition benches, Thompson soon established himself as one of the best speakers in the House. When Duff Roblin assumed the party leadership the following year, Thompson was a key voice of the opposition attacks during the 1956 beer price debate, the oil lease scandal of 1957, and was a sharp critic on penal reform.
In the Manitoba Cabinet
The Progressive Conservatives took power in 1958 after winning a minority government under Roblin. With 64% of the vote Thompson was re-elected in a redistributed Virden constituency, where he defeated the Liberal-Progressive incumbent Francis C. Bell. As the Tories assumed office on June 30, 1958, Thompson was a surprise choice by Roblin for Minister of Labour. Having had no experience in labour relations, Thompson had been tipped as a possible choice for Attorney-General, which instead went to Sterling Lyon. However, Roblin saw in Thompson a "born conciliator" who "never failed to deliver a cogent and effective argument". As Minister of Labour, Thompson declared his major task as the "welfare of the worker". He was also named Minister of Municipal Affairs. At the end of March 1959, following heated debates regarding the upcoming fiscal budget, the government lost the confidence of the legislature and fresh elections were called for June. Easily re-elected in the May 1959 election with 68% of the Virden vote, Thompson continued to hold his Labour and Municipal Affairs portfolios. As the end of 1959 approached, Roblin and the Deputy Premier and former party leaderErrick Willis were discussing the timing of Willis' departure and next post. Willis resigned his office on December 21, 1959, and Roblin then appointed Thompson to move from Labour and pick up the Public Works portfolio. Three weeks later, Willis was appointed as Lieutenant Governor of Manitoba. Thompson stayed as Minister of Public Works for the remainder of his time in office.
Later life
As an election drew near in fall 1962, and after nine years in the Legislature, Thompson decided not to seek re-election. He resigned his portfolio and his seat on October 24, 1962, and was appointed a County Court Judge. The Progressive Conservatives went on to a second majority victory that December under Roblin. Judge Thompson then served the southern and eastern Manitoba judicial districts for more than twenty years, retiring from the bench in 1983. He died of cancer on December 15, 1986, in Winnipeg.
