The retirement of Ontario Liberal veteran Greg Sorbara forces a by-election in the provincial riding of Vaughan. The seat will likely be filled this fall, the same day as another by-election, in Kitchener-Waterloo.

With Dalton McGuinty’s government (tantalizingly or alarmingly, depending on your point of view) close to a majority, any by-election will be closely watched.

Bearing that in mind, here is an interactive map breaking down how Vaughan voted in the 2011 election. The top layer shows the plurality winner by poll; the next five show four parties in isolation, and turnout.

October 6, 2011: How Vaughan voted

Use the scrolldown menu to see parties in isolation