"We have one hundred months to save the planet. When the clock stops ticking, we could be beyond the climate's 'tipping point', the point of no return."
This is according to the onehundredmonths.org site, supported by Andrew Simms of The Guardian, and numerous organizations (scroll through the list at the bottom - it's pretty impressive).
The reasoning behind one hundred months (they started counting in August - therefore there are 99 months left) is explained in this Guardian article, and is also nicely summarized at Treehugger.
If you accept this timeline, preventing a Harper majority government becomes even more urgent! Four more years of going in the wrong direction is 48 months too long.
Here in Canada, this month's action must be to support your local candidate with the best shot at defeating the Harper Conservatives (with money, time, and your vote). Then, we can all work together on our own version of the New Green Deal.