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Canadian Election Pollsters' Success

A great deal of attention is focused on opinion polls during an election, with media companies trumpeting the latest poll they've commissioned. But how successful have pollsters been at predicting the actual results of Canadian elections?  The tables below compare the results of the last polls published before the general elections in 2000, 2004, 2006, and 2008 elections.

 
2008 Election
Most Recent Opinion Polls Prior to Election
  Green Party  
Election - Share of Votes (rounded to nearest %)
Oct 14, 2008
10 38 7 26 18 Accumulated Error
( sum of percentage points missed for each party)
Angus Reid
Oct 9-12
9 37 7 27 20 5

Ekos
Oct 11-13

10 35 10 26 19 7
Nanos
Oct 10-12
10 34 8 27 21 9
Harris/Decima
Oct 9-12
11 34 9 25 19 9
Ipsos
Oct 7-9
9 34 8 29 18 9
Strategic Counsel
Oct 11
9 33 11 28 18 12

2006 Election
Most Recent Opinion Polls Prior to Election

  Green Party
Election - Share of Votes (rounded to nearest %)
Jan 23, 2006
11 36 5 30 18 Accumulated Error
( sum of percentage points missed for each party)
Poll
SES
Jan 20-22
11 36 6 30 17 2
Strategic
Jan 19, 21 & 22
11 37 6 27 19 6
Ipsos
Jan 17- 22
12 38 4 27 19 8

 

2004 Election
Most Recent Opinion Polls Prior to Election

  Green Party
Election - Share of Votes (rounded to nearest %)
Jun 28, 2004
12 30 4 37 16 Accumulated Error
(sum of percentage points missed for each party)
Poll
SES
June 22-24
12 30 4 34 20 4
Compas
June 22-23
13 33 4 34 15 7
Ipsos
June 21-23
12 31 6 32 17 9
Ekos
June 21-24
11 32 5 33 19 11


2000 Election
Most Recent Opinion Polls Prior to Election

  Alliance PC

Election - Share of Votes (rounded to nearest %)
Nov 27, 2000
11 26 41 9 12 Accumulated Error
(sum of percentage points missed for each party)
Poll
Compas
Nov 23
10 25 41 9 12 2
Leger
Nov 19-23
10 25 43 9 11 5
Ipsos Reid
Nov 17-23
10 27 39 10 12 5
Zogby
Nov 22-24
7 27 42 9 13 7

 

 

 

 

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I welcome any feedback and suggestions for fresh material to add to this site -

Andrew Heard
Political Science Department  --  Simon Fraser university