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Fieldwork dates:
22-24th October 2004
Interview Method:
Telephone
Population
effectively sampled: All adults aged 18+
Sampling Method:
Within each government office region a random sample of telephone
numbers
was drawn from the entire BT database of domestic telephone
numbers. Each number so selected had its last digit
randomised so as to provide a sample including both listed and
unlisted numbers.
Sample size:
1,011
Data weighting:
Data were weighted to the profile of all adults aged 18+
(including non telephone owning households). Data were
weighted by sex, age, social class, household tenure, work status,
number of cars in the household and whether or not respondent has
taken a foreign holiday in the last 3 years. Targets for the
weighted data were derived from the National Readership survey, a
random probability survey comprising 34,000 random face-to-face
interviews conducted annually.
The data were further
weighted by declared votes in the 2001 general election. For
a description of the method used to derive these weights please
see:
http://www.icmresearch.co.uk/specialist_areas/polling-methods.asp
Un-weighted and
weighted bases are shown at the top of each computer table and
such analysis covers all conclusions made in any report. The
un-weighted and weighted sample profile used in the weighting
scheme is shown in table 6.
Voting intentions:
ICM derives vote intentions from 4 questions.
First of all
respondents are asked how likely it is that they would be to go
and vote in a new election.
Those who say they
will vote are asked to say which party they would support in a new
election. Respondents are then asked whether they voted in
2001 and which party they voted for in that election.
Finally, voters are asked to describe their own past vote record
(always vote, almost always vote etc). The vote figures
shown in the table are calculated after ICM has excluded those who
say they will not vote, refuse to answer the question or don’t
know who they would vote for. The figures are adjusted for
turnout calculated on the basis of a combination of how likely
respondents say they would be to vote in a new election and past
vote record.
In a further step, ICM
add 50% of those who refuse to answer the vote intention question
or say they don’t know to the party they voted for in 2001.
The analysis by vote
intention shown on each table is taken from table 1, ie before
adjusting for refusers and don’t knows.
Questions: The
computer tables attached in PDF format show each question, in
full, in the order they were put to respondents, all response
codes and the weighted and un-weighted bases for all demographics
and other data including but not limited that published
.
Further enquiries:
nick.sparrow@icmresearch.co.uk
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