 He was a delegate to the Democratic National Conventions in 1936, 1940, and 1944.He was also a delegate to the Democratic State conventions in 1936, 1940, and 1944.In 1932, Lesinski was elected as a Democrat and the first person to represent Michigan's 16th congressional district to the 73rd United States Congress, and was reelected to the eight succeeding Congresses, serving in the U.S. House from March 4, 1933 until his death.