The flip side is that Harper has been running against a "reckless coalition" of "socialists, separatists, and Liberals" for the last 5 years, and any such arrangement before the election would allow him to try again.
Mulcair being a citizen of France will provide further fuel to the Tory's narrative here.
I'd love to see Tom just quietly issue a statement saying that his kids are older now and he no longer needs the French passport.
Is this feasible?