The Liberals are not going to run a candidate against American Elizabeth May to increase the odds of introducing her rich-socialist-lawyer-American-style politics into Canada:

Liberal Leader Stéphane Dion will not run a Liberal candidate against Green party Leader Elizabeth May in the next federal election, the first time the Liberals won't plan on having a full slate of candidates.

The leaders have agreed not to run a candidate in each other's riding. They will hold a joint news conference about their deal on Friday in Halifax.

I can seriously see a day where Dion won't be being invited to the Liberal Christmas party.