Canada

When Justin Trudeau was elected in 2015, he touted his government’s climate credentials on the world stage. “Canada is back, my friends,” he told delegates at the Paris climate summit. “We’re here to help.” His government rolled out a nationwide carbon tax (or as the then environment minister Catherine McKenna called it, a “price on pollution”).

But in the years since, Canada remains the only G7 nation to emit greenhouse gases far above its 1990 levels – while now also planning to extract and export record volumes of oil.

We'll fix the contradiction by electing a government that doesn't even promise to help.