To the Liberal Party of Canada:

What is the most important priority? To not let Harper win a majority. Forget your internal battles for a second and think of the country: five or six years of Harper could devastate Canada. You know this. In case your next leader isn’t exactly what you want, make sure he is guaranteed at least to keep the Tories to a minority—and buy the time you need to improve.

You will need people to feel a strong sense of shared injustice and a headstrong sense of hope. Don't wait: prepare as much as possible before the convention.