page_title: Opinion polling for the 2017 New Zealand general election
section_title: Graphical summary
hierarchical_section_title: Opinion polling for the 2017 New Zealand general election / Party vote and key events / Graphical summary
caption_attribution_description: English: Graph showing support for political parties in New Zealand since the 2014 election, according to various political polls. Data is obtained from the Wikipedia page, Opinion polling for the Next New Zealand general election
context_page_description: Various organisations commissioned opinion polls for the 2017 New Zealand general election during the term of the 51st New Zealand Parliament. Roy Morgan Research polled monthly, with MediaWorks New Zealand and Television New Zealand polling less frequently. The last The New Zealand Herald was in December 2015, and Fairfax Media discontinued their poll after the 2014 election. The sample size, margin of error and confidence interval of each poll varied by organisation and date, but were typically 800–1000 participants with a margin of error of just over 3%.
  The previous Parliament was elected on Saturday 20 September 2014. The 2017 general election was held on Saturday 23 September 2017.
context_section_description: The first graph below shows trend lines averaged across all polls for parties that received 5.0% or more of the party vote at the 2014 election. The second graph shows parties that received between 1.0% and 4.9% of the party vote or won an electorate seat at the 2014 election.
caption: Summary of poll results given below from the election result 20 September 2014. For simplicity, only political parties that received 5.0% or more of the party vote at the 2014 election are shown. Lines give the mean estimated by a LOESS smoother (smoothing set to span = 0.35), with shaded grey areas showing the corresponding 95% confidence interval for the estimate. Figures to the right show the estimate from the smoothing line at the date of the most recent poll, with 95% confidence interval.
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