Torontoist Environment Editor Chris Tindal is currently engaged in a federal by-election campaign. This weekly column is an attempt to offer a "behind the scenes" glimpse into what it's like to be that mysterious Other: a politician. A strange thing is happening here in Toronto Centre: Barack Obama seems to have become a candidate. Not literally of course, and (as you'll see) it's not clear what party he's representing, but his presence is certainly being......