Raitt is not feminist but she is socially progressive, so Trudeau has no edge there.  And he is much weaker than Raitt on fiscal and economic matters.   She could recapture a number of suburban swing ridings for the conservatives, and possibly do very well in the Maritimes where she is from.  Quebec may be a challenge, but with a lock on the prairies and rural English Canada (lower taxes) and the swing ridings she would be a threat to the Liberals.