 This was the start of Casselman's 33 consecutive years as MP for Grenville-Dundas.After winning the 1925 election, Casselman sought re-election in 1926 and again won, this time against Progressive candidate Preston Elliot.Casselman went on to be re-elected as MP in the next eight federal elections, taking place in 1930, 1935, 1940, 1945, 1949, 1953, 1957, and 1958.