You could be for­giv­en for think­ing that all Welling­to­ni­ans are obsessed with pol­i­tics. Advance vot­ing start­ed today, and already some vot­ers are proud­ly sport­ing their “YES I have vot­ed” stick­ers. Yet thou­sands of Welling­to­ni­ans have still not enrolled to vote. Who are these dis­en­fran­chised peo­ple, and why have they not enrolled?

Luck­i­ly, the Elec­toral Com­mis­sion has data, bro­ken down by elec­torate and 5‑year age bands. The inter­ac­tive charts there are pret­ty good, but I decid­ed to down­load the data and put it togeth­er in dif­fer­ent ways to explore it fur­ther. Here’s the enrol­ment pat­terns by age across the Welling­ton elec­torates (arranged approx­i­mate­ly from the out­er regions to the cen­tre):

Wn-region-charts

As has been wide­ly not­ed, it’s the younger vot­ers who are less like­ly to be enrolled. But the details of this pat­tern vary by elec­torate. In the out­er elec­torates, by the age of 30 near­ly every­one is enrolled; but when you get to Welling­ton Cen­tral, the lack of enrol­ment goes right up to 40. It’s not just the youth who haven’t got around to enrolling: in some cas­es there is notable dis­en­gage­ment among Gen X as well as Gen Y. Is this pat­tern com­mon across the coun­try?

I want­ed to look at the nation­al trends, but with a twist: I invert­ed the age axis so that it showed the approx­i­mate year in which each cohort turned 18 and was hence eli­gi­ble to enrol. Was there a time when there was a dis­tinct shift in enrol­ment pat­terns, or have peo­ple just grad­u­al­ly been becom­ing less inter­est­ed? Let’s have a look.

Chart: electoral enrolment vs year of eligibilityThe pat­tern is strik­ing: up until about the mid-90s, the pro­por­tion of non-enrolled peo­ple was very grad­u­al­ly increas­ing, but it stayed below 5%. From the mid-90s, the slope changes sud­den­ly, and while the youngest peo­ple (18–24) are still the least like­ly to be on the roll, if any­thing the rate of increase has been eas­ing off. I thought about what might have trig­gered this: Roger­nomics? Stu­dent tuition fees? House prices? But one major, rel­e­vant event stood out; a fun­da­men­tal change to the vot­ing sys­tem, with the first MMP elec­tion in 1996.

This sur­prised, and to be hon­est, dis­mayed me. Sure­ly a pro­por­tion­al sys­tem, which should be fair­er and give peo­ple a greater say, would encour­age enrol­ment rather than dis­cour­age it? But maybe all the quirks and appar­ent gam­ing of the sys­tem has put peo­ple off. Thresh­olds. Waka-jump­ing. Over­hangs. Epsom. Win­ston.

I post­ed this to Twit­ter, and it gen­er­at­ed a lot of dis­cus­sion and some help­ful objec­tions. The data is a snap­shot in time rather than lon­gi­tu­di­nal, so it could be that it’s about age rather than gen­er­a­tion, and per­haps New Zealan­ders have always put off enrolling until they were old­er. Peo­ple do go on and off the roll over time, so it may not just be about peo­ple “stop­ping enrolling” after some date. But that hypoth­e­sis is con­sis­tent with the over­all decline in enrol­ment and turnout.

Oth­er pos­si­ble expla­na­tions includ­ed: the WWII and Boomer gen­er­a­tions see­ing vot­ing as a hard-won right; a range of oth­er wor­ries affect­ing young peo­ple (stu­dent debt, uncer­tain careers); and a sense that the polit­i­cal and eco­nom­ic nar­ra­tive is so dom­i­nat­ed by old­er prop­er­ty-own­ers that it has become irrel­e­vant to younger peo­ple. One of my oth­er thoughts was that peo­ple who were first eli­gi­ble to vote in 1996 would bare­ly remem­ber a time before Roger Dou­glas, and that since then both major par­ties had espoused var­i­ous degrees of neolib­er­al­ism, remov­ing the sense that there’s any chance to fun­da­men­tal­ly change the eco­nom­ic sys­tem.

After that dis­mal thought, I went back to look­ing at geo­graph­ic vari­a­tions. Why do some elec­torates have a greater age vari­a­tion than oth­ers? To make map­ping eas­i­er, I used the over­all age pat­tern to hone the com­plex pat­tern down to a sin­gle index: the dif­fer­ence between the per­cent­age of over-35s enrolled and the per­cent­age of 25–35 year-olds enrolled. I ini­tial­ly looked at 18–35 year-olds, but those maps were clear­ly dom­i­nat­ed by stu­dents (e.g. the dif­fer­ence was mas­sive in Ilam and Dunedin), and the mobil­i­ty and oth­er com­plex­i­ties of stu­dent life seemed to drown out oth­er pat­terns. I made a map, with zoomed-in sec­tions to make the cities more leg­i­ble (click for a high­er-res­o­lu­tion ver­sion):

unenrolled-age-differences-by-electorate-25to35vsover35While there are some inter­est­ing vari­a­tions between provinces, the aspect that most strikes me is that there’s a gra­di­ent from cen­tral cities to sub­urbs to rur­al areas. The more urban a place, the wider the enrol­ment gap between under- and over-35s. There’s a host of pos­si­ble rea­sons for this: mobil­i­ty, eth­nic diver­si­ty, recent immi­grants who are unsure of their eli­gi­bil­i­ty, the dis­tance from fam­i­ly and their vot­ing tra­di­tions. There’s room for a lot more research on this.

One thing we can say for sure is that in the cen­tral cities, young peo­ple have giv­en away their voice. They will spend more time in the future, but are hav­ing less say in it. Peo­ple between 18 and 35 make up more than half of the eli­gi­ble vot­ers in Welling­ton Cen­tral, but only 41% of the cur­rent roll. If the near­ly 10,000 eli­gi­ble but unen­rolled 18–35 year-olds in this elec­torate enrolled and vot­ed, you could make a real dif­fer­ence to the way Welling­ton is rep­re­sent­ed in Par­lia­ment.

So, what are you wait­ing for? Enrol now.

[Data source: Elec­toral Com­mis­sion enrol­ment sta­tis­tics as at August 2014, with esti­mat­ed pop­u­la­tion sta­tis­tics as at 30 June 2014 (pro­vi­sion­al) using 2013 cen­sus data. Charts and maps cre­at­ed with open-source tools: R, QGIS and Libre­Of­fice.]