I wouldn't give much credit to the 2010 election results alone, for two reasons, a) RoFo indeed mislead many voters, and b) they were more about taxes than transit.
However, the 2014 municipal elections point in the same direction: pro-subway candidates did much better in Scarborough than pro-LRT (Chow's support plummeted from 38% at the start to 25% on the election day). I know that the elections were about multiple issues; I don't believe transit issues weren't a significant contributor though.
Plus, there were a few by-elections; remember Mitzie Hunter?
It is incredibly foolish to pretend that all those multiple elections results still mean nothing in transit planning.
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Obviously, not. Remember that a significant portion of Scarborough population are visible minorities themselves, and a sizeable % of voters who supported RoFo were visible minorities.
Obviously, they couldn't have any personal interest in promoting biggoted agenda.
One can ask why they voted for RoFo then. I don't have a certain answer, but the most probable explanation is that they did not feel threatened by his biggoted personal views. And in a way, they were correct about it. Their human rights are protected by the federal laws and the system of courts. A mayor of the city have few mechanisms to implement any biggoted policies, regardless of his personal views.
On the other hand, his anti-tax, anti-spending agenda resonated with many voters, including recent immigrants who already acquired the citizenship. The 2010 elections were more about taxes and city spending than about transit.