In the UK in the 4 decades from 1960 to 1999 estimated voter turnout from both homeowners and renters was about 75% (homeowners slightly higher rate but not by much)
Since then the turnout of homeowners has decline a fraction but renters turnout has declined from 70% to less than 50%
In the UK at least those who rent the voter turnout has declined from about 70% to less than 50%. This has also occured at the same time as the gap between the turnout of those >65 and the 21-35 age group is the widest it's ever been.
I would hazard a guess much the same in NZ (yes?)
Seems the young and those who rent aren't that keen on voting.
If the main parties in NZ it seems that Greens are the one who are doing the best job promoting themselves to the young and renters .....but as EZ said Nationals advantage is that their 'supporters' turn out at a greater rate and Labour et all lament the low turnout of other groups
What's changed that is going to make this year different