[1] He was born on December 18, 1885, in Sainte-Thérèse, Quebec, and became a physician.
Lesage won a seat to the City Council of Montreal in 1930 against Ernest Poulin, who also was a Liberal member of the provincial legislature.
He ran as an Action libérale nationale candidate in the district of Montréal-Laurier in the 1935 provincial election and defeated Poulin.
Lesage joined Maurice Duplessis's Union Nationale, but was defeated in 1936 and 1939.
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