Undeclared MP from BC, Peter Julian has four MPs -
Isabelle Morin, Kennedy Stewart, Brian Masse and Rathika Sitsabaiesan
Thomas Mulcair now has eight MPs supporting him -
Robert Aubin, Francois Lapointe, Jamie Nicholls, Marie-Claude Morin, Alexandrine Latendresse, Pierre Nantel, Claude Patry and Marc-Andre Morin
And Brian Topp has MP Francoise Boivin Alain Giguere and Yvon Godin
Romeo Saganesh has neighbouring MP, Christine Moore
It appears that some Quebec MPs see that a leader from outside Quebec would not be a problem in maintaining support of Quebec voters.
Updated September 23... Brian Topp adds two more MPs to his list of supporters