MetroMan,
Thanks for your sleuthing work on the Rob Ford file the past few weeks. However, when it comes to predicting Rob Ford's demise, your track record has been less than stellar ever since RF put his hat in the mayoralty ring in early 2010. I am going to call you out on this one, too.
I don't think Olivia Chow is a certain "lock" on the mayoralty because she is largely preaching to a choir of downtowners who stayed away from Rob Ford in record numbers last time. Even though I am no longer a resident of the City of Toronto, I would vote for Olivia Chow with the same amount of reluctance as I did for George Smitherman - and I consider myself to be more left of centre than the average elector. I think many other people are in the same boat, and I'm just thinking about the downtown vote, let alone the suburbs.
I also wouldn't count on the "Chinese vote". For starters, there aren't enough people of Chinese descent in Toronto to tip the election. This isn't like the Hispanic vote in California or the Desi vote in Brampton. Secondly, Chinese voters aren't suddenly going to vote for Olivia Chow because she is Chinese. Thirdly, and most importantly, Chinese people (I'm one) are pretty disengaged from politics, especially considering that they are generally wealthier and more educated than other ethnic groups. I think this is especially true in municipal politics.
If it's a two-way race between Rob Ford and Olivia Chow, I would actually put my money on Ford winning.