Research Note no. 1 2004–05
Opinion polls: comparison of voting intention, July 2004
Sarah Miskin
Politics and Public Administration Section
Greg Baker
Statistics Section
12 July 2004
This Research Note is one
of a series comparing the opinion polls results from June 2001 onwards
of the major polling organisations: Newspoll, Roy Morgan
Research and ACNielsen. The latter’s political polls
are not published as regularly as those of the other two organisations;
it is included here because it conducts more polls in an election year
and 2004 is expected to be such a year. However, given ACNielsen’s more
limited results, there is not enough published data available to make
a useful cross-time comparison across all three organisations in all areas.
For this reason, only ACNielsen’s ‘primary vote, all parties’ data is
included. Newspoll results are published in The Australian and
ACNielsen results are published in the Sydney Morning Herald and
The Age. Morgan results are available at: www.roymorgan.com.au.
For an average of the three
polls, see the Reuters Poll Trend at http://www.aph.gov.au/library/intguide/stats/reuters-poll-trend.xls.
Other opinion poll data can be found at http://libiis1/Library_Services/opinionpolls/index.htm.
The graphs on the following
pages show the results of the polls for the primary vote (Figures 1 to
3), a comparison of the Coalition and Labor results of the two major polls
(Figures 4 and 5), a comparison of the results for the Democrats and the
Greens (Figure 6), and the two-party preferred results for Newspoll and
Morgan (Figure 7), using Labor as the indicator (the Coalition’s results
being a mirror image of those of Labor). The need for caution in interpreting
poll results is outlined in another Research Note, ‘Interpreting opinion
polls: some essential details’ (http://www.aph.gov.au/library/pubs/rn/2003-04/04rn52.pdf).
Note that the graphs in this Note are drawn to different scales to present
the clearest picture of the wide range of results across the parties.
This Note is published in
conjunction with a Research Note on the results of polls that test the
importance of issues to voters and the parties that voters prefer to handle
those issues.
For copyright reasons some linked items are only available to
Members of Parliament.

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