Leadership races are happening in the U.S. and Canada and for most voters and partisans, while winning elections are important, it is also about what kind of policies will be implemented. Most people want to support more than just a political party; they want to support a movement based on clear values.
Say what you will, but Mulcair has bonafides in the environmental field and as Canada abandons international climate accords like Kyoto, any opposition leader -- let alone Prime Minister -- needs to understand the environment file deeply, and the role our environment plays in our economic future.