Just four days remain until Kiwis can put pen to paper and choose the country's potential future flag.
The first binding referendum on the flag will be held from Friday until December 11, giving voters three weeks to have their say.
But those wanting to cast a vote need to be enrolled by Thursday.
People can choose between the five options - three with silver ferns, a koru flag and red peak one - all of which have been fluttering over Wellington Town Hall for the last month.
A second referendum will be held in March that will rate the winning flag against the current one.
A UMR Research poll of 1000 people released last month found the red and blue fern design by Kyle Lockwood was the most popular of the new offerings, followed by a black and blue version of the same design.
The Black and white fern nabbed third spot while the late entry, red peak, came a close fourth.
However, the current flag came out on top when it went head-to-head with each of the alternative designs.
The first referendum will ask voters "If the New Zealand flag changes, which flag would you prefer?" It required that the five options be ranked in order of preference.
Voting papers should be received this week and next, with the Electoral Commission urging voters to update their address details immediately.
For more information on the flags visit www.flag.govt.nz.