2011 Canadian Election Vote Splitting
How did so-called "vote splitting" affect the 2011 Canadian federal election? This visualization aims to help you answer that question by interactively playing with different hypothetical changes in voter behaviour.
Generating Election results CSV
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Download this zip file with full riding-by-riding results from Elections Canada (it's linked from here).
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Join all of the poll results csv files into one mega-csv with
cat pollresults_* > joined.csv
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Convert this csv's encoding from
iso-8859-1
toutf8
withiconv -f iso-8859-1 -t utf-8 joined.csv > joined-utf8.csv
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We need to cut out a lot of fat from this csv, and sum up each riding's totals. Run
data_munging/csv_consolidator.js joined.csv > trimmed_results.csv
(you may need to bringjoined.csv
into the same directory, of course).
Generating Map TopoJSON
First, download and unzip the shapefile from https://www12.statcan.gc.ca/census-recensement/2011/geo/bound-limit/bound-limit-2011-eng.cfm
You'll want to choose "Federal Electoral Districts" and "Cartographic Boundary File"
Then run the following (you will need to npm install topojson
first):
topojson -p +districtId,districtName,+totalVotes,+CPC,+LPC,+NDP,+GPC,+BQ \
--simplify-proportion 0.4 -q 3000 \
-e trimmed_results.csv --id-property=+FEDUID,+districtId \
-o districts.topojson \
gfed000b11a_e.shp
The topojson CLI reference has more tips that can likely reduce the filesize further.
Running locally
npm install
npm start
And then visit localhost:8080
in your browser.
Alternately, npm build
will create the js/css files for you if you want to deploy
to a static hosting site (like Github pages).
Misc links and alternate data sources
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Alternate Election boundary topojson: https://github.com/opennorth/represent-canada-data/blob/master/topojson/fed_ed_federal_electoral_districts.topojson
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Alternate (slightly less useful) data source: http://geogratis.gc.ca/api/en/nrcan-rncan/ess-sst/6d1d8f90-1c25-5fd0-880d-138d27c8cb57.html
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https://en.wikipedia.org/wiki/Results_by_riding_of_the_Canadian_federal_election,_2011
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http://www.cbc.ca/news2/politics/canadavotes2011/ (wikipedia results are more accurate)