The Dairy Workers Union executive has endorsed Andrew Little in the Labour leadership race.
The Dairy Workers Union (DWU) commands about 2.75 per cent of the overall vote for the leader.
Under Labour’s rules, affiliated unions hold 20 per cent of the vote, MPs 40 per cent and party members 40 per cent.
The DWU decision will cement Little as the frontrunner and comes after the biggest affiliated union, the Engineering, Printing and Manufacturing Union, endorsed him.
The recommendation is not binding on the unions’ 60 delegates but is likely to carry strong weight.
No word yet on whether the remaining affiliates will be endorsing any candidate.