 He articled in law at Quebec City, was admitted to the bar in 1828 and set up practice in Trois-Rivières.Polette served as warden for the county from 1842 to 1846 and then was mayor of Trois-Rivières from 1846 to 1853.He was elected to the Legislative Assembly of the Province of Canada for Trois-Rivières as a Reformer in an 1848 by-election held after the preceding general election was not completed in that riding.