This continued amid the Liberal meltdown in Quebec in 2006, although one seat at the eastern end of the area was lost to the Bloc.
Two former Prime Ministers, Paul Martin and Pierre Trudeau, represented ridings in this area.
Nevertheless, in 2011, several Liberal bastions, such as Notre-Dame-de-Grâce—Lachine, LaSalle—Émard (Martin's former riding), and Pierrefonds—Dollard, fell to the New Democratic surge felt throughout Quebec.
Additionally, the Conservatives came very close to taking Mount Royal (Trudeau's former riding), which has been in Liberal hands since 1940.
The region reverted to form in 2015, with the Liberals taking every seat here except Outremont, the riding of NDP leader Tom Mulcair.