NZ electoral demographics
Two more visualisations:
Kieran Healy has graphs of the male:female ratio by age for each electorate. Here are the four with the highest female proportion, rather dramatically starting in the late teen years.
Andrew Chen has a lovely interactive scatterplot of vote for each party against demographic characteristics. For example (via Harkanwal Singh), number of votes for NZ First vs median age
Thomas Lumley (@tslumley) is Professor of Biostatistics at the University of Auckland. His research interests include semiparametric models, survey sampling, statistical computing, foundations of statistics, and whatever methodological problems his medical collaborators come up with. He also blogs at Biased and Inefficient See all posts by Thomas Lumley »
The correlation for median age and NZ First voting is 0.44 (moderately positive). What you’ve shown is NZ First votes and percentage of people aged 70-74.
The party which *really* stands out in terms of correlation between median age and voting share is National, at 0.84. Interestingly, there’s pretty much a zero correlation between median age and Green votes.
It’s a fascinating website.
9 years ago
Also, there are some interesting changes depending on whether you look at just the Maori or just the general electorates or both of them. Several parties go from moderate positive to moderate negative depending on what you include.
9 years ago
Yes, I’ve been discussing these with Andrew. It’s a bit tricky to define Māori electorate demographics. For the general roll, it’s good enough to just count everyone living in the electorate. For the Māori roll, if you count everyone of Māori descent living in the electorate you get a fairly big overcount.
For example, Te Tai Tonga shows up as having the largest number of people with internet access, by a substantial margin.
9 years ago