A clerical error was to blame for Perth MHR Alannah MacTiernan failing to nominate on time for Labor's State presidency.
Ms MacTiernan said a staff member had sent her nomination to an incorrect email address and failed to notice it had "bounced" until after the deadline on Friday.
It is understood Labor's ruling administrative committee would not consider the late nomination without a formal request by Ms MacTiernan. Yesterday, she said she was unlikely to lodge one.
The Right's Peter Tinley and the Left's Adrian Evans will contest the position.