Fit of Absent Mindeness wrote on Feb 18
th, 2014 at 2:28pm:
http://essentialvision.com.au/category/essentialreport
51/49 to the ALP!
An interesting result, but not hugely informative on its own.
As the Poll Bludger puts it, Essential Research polls have a bias towards stability. This is caused by the methodology, where each week's poll result is actually an aggregate of two separate polls.
Quote:NB. The data in the above tables comprise 2-week averages derived from the first preference/leaning to voting questions. Respondents who select ‘don’t know’ are not included in the results. The two-party preferred estimate is calculated by distributing the votes of the other parties according to their preferences at the 2013 election.
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Source)
What makes this poll interesting is that the Liberal vote has moved two points (with this going to the ALP and PUP) which is more than usual for the slow-moving ER. This suggests that the latest weekly sample has been on the low side for the Liberals. Next week's ER poll will include this low sample.
The two-party preferred figure also does not explicitly ask respondents which major party will get their 2PP vote. If there's a trend where neutral voters are deserting the Coalition or ALP, this poll won't pick it up.
The Nielsen poll did sample this as well as using the 2013 election method and this caused that poll to produce two different 2PP results (differing by 1%). I do not know if this is significant, but this is a trend that should be watched.