We had the chance last week to map the poll-level results from the 2011 Ontario election against the proposed new electoral boundaries published at the end of August. (Ontario mostly uses federal boundaries for provincial elections).
The result was that population growth in the 905 tended to favour the provincial Liberals, at least enough to tip the balance in a notional Legislature using the new boundaries to a small two-seat majority, as opposed to the so-near-but-yet-so-far one-seat minority in the actually existing Legislature. The story is here.
