Nearly 40 per cent of enrolled voters have cast their vote for a new New Zealand flag.
The Electoral Commission said that as of the end of yesterday, 1,256,163 voting papers for the first referendum had been received (39.62 per cent of enrolled voters).
It warned that if people hadn't returned papers, time was running out.
"If you still haven't voted, it's not too late, but you will need to hurry," said Robert Peden, chief electoral officer.