Career
First elected to the constituency of Bourassa in a by-election in 1997, Lamquin-Étheir represented the riding until 2003, when it ceased to exist as a result of redistribution. In that year"s provincial election, she was re-elected in the constituency of Crémazie, which she represented until 2007. She was defeated by Lisette Lapointe of the Parti Québécois in the 2007 election.