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I was actually playing around with a similar but different idea, using the poll results from 2008 for Ottawa West-Nepean. Different because I twisted the equations to show the cushion enjoyed by the leading candidate at each poll and coloured the layer accordingly, differentiating between Cons vs non-Cons in computing the cushion.
I produced a KML, so it can be overlaid on Google Earth/Maps to get the street references for orientation purposes.
This was a rough demo so the pop-ups defined are just a quick attribute dump.
Workflow:
1) Convert the poll boundaries available from Elections Canada to the coordinate system used in Google Maps/Earth (EPSG: 4326). I used ogr2ogr from GDAL to do this.
2) Produce a shapefile joining the poll boundaries to 2008 election results. This was done in QGIS.
3) Play with colouring and export as KML. For this I used Shape2Earth (http://shape2earth.com/default.aspx) which is a plugin for the MapWindow GIS (http://www.mapwindow.org/)
The export tools are free but a bit rough and it takes some tinkering. A copy of the generated KML is here:
http://catch22campaign.ca/group/ottawawestnepean/forum/attachment/download?id=5139919%3AUploadedFile%3A16693
-- Tracey P. Lauriault 613-234-2805
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