Emphasis on the results, not the method to pay for them.
This is the key. Make a barrage of transit announcements at transit stations or construction sites, showing how much better transit is getting.
Unfortunately, even if this government does last until 2014 or 2015, there won't be much new tangible infrastructure to flaunt, other than the Union-Pearson train. Their best bet is to announce some massive GO service boosts, and do as many press conferences at GO stations across the GTHA, as well as at various points along the ECLRT construction site, and highlight how much better these investments are going to make life in the GTHA.
"We're doing all of this. But we need some help in order to make these next step projects, like the Hurontario LRT, electrified GO, and the Downtown Relief Line a reality."
I think one of the best ways to remove the sting of these new revenue tools would be to announce all-day two-way service on pretty much every line, and 30 min service on the Lakeshore lines. It would be a huge step, but you need a gesture of good faith if people are going to swallow these taxes or fees. These types of service boots would be mostly operating costs, with relatively little capital involved in them (especially compared to projects like the DRL).
PS: 4,000 posts. Holy crap, I spend way too much time on here...