Does forbidding election advertising on voting day make sense?

With close to half a million people having already voted while politicians have been in full campaign mode, what's the point of the age-old rule forbidding election advertising on polling day? That's the question arising from the huge number of people encouraged to cast advanced votes and avoid the big election day crowds because of Covid-19. After the 2017 election, the Electoral Commission encouraged the government to reconsider the law, which bans displaying, delivering, wearing or distributing campaign material - though you can wear a lapel badge or rosette. And you can't post on social media or websites either. But you can wear party colours and put them on vehicles. Our reporter Nick Trubridge asked University of Otago law professor Andrew Geddis whether the law still makes sense.