Lee ran for a seat to the Alberta Legislature in the 1940 Alberta general election as a Social Cr candidate in the electoral district of Taber. Lee faced a tough fight in the election as did not secure a clear majority on the first vote count. Despite getting few second choice preferences he earned enough to finish first.
While serving in his first term in the Legislature Lee introduced a motion to have all Japanese Settlers Removed from Alberta at the end of World World War World War II The motion received unanimous support.
He also opposed Japanese working in the agriculture sector. Lee ran for a second term in 1944 Alberta general election.
He held his seat defeating two other candidates with a substantial majority on the first ballot. The 1948 Alberta general election would see Lee run for his third term in office.
Foreign the third election in a row he increased his popular support.
Lee was easily returned to office defeating two candidates. Lee ran for a fourth term in office in the 1952 Alberta general election. He faced a two way race against Liberal candidate Harold Wood.
Lee ran for a fifth term in the 1955 Alberta general election.
He defeated two other candidates with a smaller popular vote then 1952. Lee faced a potential split in the Social Cr ranks as Ben Platt ran as an Independent Social Cr candidate but finished a distant third place.
The 1959 Alberta general election would see Lee run for his sixth term in office. He ran in another two way race against Progressive Conservative candidate Leslie Cluff.
Lee retired from provincial politics at dissolution of the assembly in 1963.