I'll believe it when they take real action. I think they are stalling. I think they will make some token gestures in the budget but won't have a comprehensive plan. This Toronto Star article compares the deficit fight to Kyoto, with interesting parallels.

One of the Cons' big questions is how they will tackle the oil sands problem, which I think could actually hit their voter base. This TDH entry on some Liberal talking about why the oil sands are a federal issue (i.e. limits on oilsands != NEP2) is interesting.