New Zealand is heading into one of its tightest elections in years. The incumbent conservative coalition faces an uncertain path to power, and polls suggest a millennial newcomer could end up as kingmaker.

The center-right National Party and center-left Labour Party have dominated Wellington politics for almost a century, but support for each has now fallen below 30% in public polling. Voters are drifting toward parties further to the right and left, and toward a centrist party that could enter parliament for the first time.

Frustrated by soaring living costs, stubbornly high unemployment, and a stagnant economy, voters head to the polls on Saturday looking beyond their traditional choices.