In July, Duncan Garner promised to go vegan for a year if Labour was able to govern alone at the election. Following a flood of messages from people looking to hold him to account, he's keeping his word.
In the heady days of the 2005 general election campaign, Green MP Keith Locke made a promise he would live to regret.
He said if ACT leader Rodney Hide won Epsom, he would run through the streets of the electorate naked.
It seemed rash even at the time. Polls showed Hide on track for victory in Epsom, and he ended up winning the race handily.
Locke was forced to stick to his word, at least as best he could within the boundaries of New Zealand law and common decency.
He walked down Broadway on a Sunday afternoon, clothed only in body paint and a G-string.
Since then, most New Zealand politicians and pundits have been reticent to put their bodies on the line in support of their pre-election predictions.
That is, until Duncan Garner set about delivering his usual 6.30am editorial on The AM Show one day in late-July.
"I'm so confident that Labour won't poll this high on the night, or even high enough to govern alone, that if I'm wrong and either happens, I promise to become a vegan for a year," he said.
When Garner made that promise in July, Newshub’s Reid-Research poll was showing Labour on 60.9 percent support.
Fast forward to election night. Labour supporters are overjoyed at their preferred party winning an outright majority of seats in Parliament.
But on social media another subplot was playing out: people are calling for Garner to keep his word.
This week, The AM Show host conceded to the people holding him to account, and said he would be going vegan for a year.
The new lifestyle is fine so far, mainly thanks to the support and advice he's received from people across the country, he says.
Despite his self-inflicted lifestyle change, he won't be backing away from delivering risky, and sometimes wrong, political opinions.
"There will always be times when you get it wrong. You can't always be 100 percent right. [At RNZ] right now there will be people who are 100 percent wrong," he says. "This time it's quite a high-profile event. But journalists who think they're never wrong are journalists who simply aren't worth listening to."
Garner says he respects the efforts of the citizen journalists who demanded accountability.
"You can't sit here every day and be a guy that holds people to account and demands things from others if you go at the first opportunity and ignore a pledge or promise you make yourself."
Mediawatch will be periodically checking in to find out whether Garner has kept his commitment to veganism.