Voting in the first flag referendum closes at 8:00pm today.
The winner from the five options then goes up against the current flag in a second referendum in March.
Voter turnout has been higher than many expected.
The results for the five-way beauty contest are almost in - the contenders: the two Kyle Lockwood silver fern designs, the traditional black and white fern, the koru, and the late entry - red peak.
Out on the streets today there was a good mix of those who'd voted and those who hadn't sent the forms back.
The latest numbers show 1.5 million Kiwis cast their vote - that's 47 percent of enrolled voters.
Winston Peters has been campaigning against the referendum and says the turnout is abysmal.
Preliminary results should be known by 8:30pm, with official results due on Tuesday.
The 2013 asset sales referendum turnout was 1.3 million or 44 percent and the 2009 smacking referendum pulled 1.6 million votes or 56 percent. So far the flag vote sits in between.
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