In 2015, Stéphane Lauzon, a former teacher and Gatineau city councillor, took the new riding of Argenteuil–La Petite-Nation. Now the Liberals are aiming to keep it.

Lauzon took the district, which includes portions of Gatineau, Lachute and Grenville-sur-la-Rouge, by more than 9,000 votes over the second-place NDP candidate.

Of western Quebec's four ridings, this is where the Bloc Québécois did best, with 9,525 votes. It was also the only Ottawa-Gatineau riding where voter turnout fell below the national average.

Now Lauzon is up for re-election against social worker and former Parti Québécois candidate Yves Destroismaisons, now running for the Bloc; People's Party candidate Sherwin Edwards, the president of a company that makes vaping products; Charlotte Smoley of the NDP; Conservative candidate Marie Louis-Seize, a former union president with Bell; and environmental designer Marjorie Valiquette of the Green Party.

Candidates are included in this riding profile once they've been listed as a confirmed candidate by Elections Canada, chosen as the winner of a nomination contest or who were the chosen candidate by a party that got at least one per cent of the national popular vote in 2015.

CBC Ottawa sent every candidate running in eastern Ontario or western Quebec seven questions via their party or a publicly available email address.

They were asked to stick to 25 to 100 word answers, depending on the questions.

Their answers have not been edited by CBC.