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Christchurch, Auckland and Wellington make up the top three places in which election-related engagement is being generated on Facebook.
Opposition leader Judith Collins comes in a close second, generating the second-highest number of engagements on both social media platforms, with Chlöe Swarbrick from the Green Party coming up third on Instagram's engagements.
The latest social media trends, collated by Facebook Australia & New Zealand, show who Kiwis are discussing the most online ahead of this year's election.
Mia Garlick, director of policy at the social media platform, said the insights would be shared weekly as part of the platform's commitment to safeguarding elections on social media.
"We've seen New Zealanders use Facebook and Instagram to engage in the 2014 and 2017 elections to share their opinions, connect with their candidates, and engage with the electoral process," she said.
And with just over three weeks until the election, the Prime Minister is still the social media favourite.
Cannabis is the third most talked about topics among young people (18-25) on the platform but over on Instagram, social policy issues dominate the conversation.
Both David Seymour and Winston Peters round out the top five on Facebook engagements, with Seymour generating the third highest number of mentions and Peters the fourth.
Over on Instagram, Chlöe Swarbrick comes in third for the most mentions on the platform behind Ardern and Collins respectively, with Winston Peters the fourth most mentioned and David Seymour coming in fifth.
The top posts from the most-engaged NZ politicians on Instagram show that relatability and behind-the-scenes moments are key on Instagram: with Jacinda Ardern honouring Ruth Bader Ginsburg, Chloe Swarbrick claiming Marama Davidson is a superhero, and Judith Collins showing an intimate family moment backstage with her husband, Garlick said.
But the mighty Waikato - home to both the Prime Minister and the Opposition leader, comes in as the fourth most engaged location for election related conversations on Facebook, followed by the Bay of Plenty.
The heart emoji is the most frequently used emoji in connection with election-related posts, followed by the fire emoji, used to describe something that is "excellent, scathing, or that is performing exceptionally well," Garlick said.
The laughing crying emoji, which refers to something funny or pleasing, is another commonly used emoji in online political engagement.