PremiumOpinionUpdatedRichard Prebble is a former Labour Party minister and Act Party leader.

‌Centre-right votes cast for Qiulae Wong's Opportunity Party could help make Chris Hipkins Prime Minister. Photo / Dean PurcellA small party can decide an election without winning a single seat. I know because it happened to me.

In the 1975 Muldoon landslide I was Labour’s candidate in Auckland Central, one of the country’s most marginal electorates and a seat National confidently expected to win. Yet I survived while