Louis-Philippe Mercier

He ran as a Liberal candidate in a 1921 provincial by-election in the district of Trois-Rivières and won, succeeding Joseph-Adolphe Tessier who had recently died.

Mercier was re-elected in 1923, but was defeated by Conservative rising political star Maurice Duplessis in 1927.

Mercier was sheriff of Trois-Rivières from 1931 until his death. He died on March 16, 1961.