Torontoist is officially in election mode. In the run-up to the big day, we'll be profiling some of the most closely contested ridings in the GTA, looking for the bellwethers and offering snapshots of electoral districts in transition. Photo of Peggy Nash by Miles Storey/Torontoist. Parkdale-High Park is the stuff of leftie dreams, a riding where the only real question is whether you hate Stephen Harper, or really hate Stephen Harper. Bisected by Roncesvalles Avenue,......