The Government is still struggling to find the numbers it needs to progress legislation aimed at reducing delays in the court system.
The Criminal Procedure (Reform and Modernisation) Bill was at the top of a provisional order paper to come before Parliament this week for its second reading.
Prime Minister John Key says that is unlikely to happen and the Government is still negotiating with its support parties to gain the necessary backing.
One of the sticking points is the future of a defendant's right to silence, and Mr Key says in an MMP environment it is necessary for a minority government to negotiate support.
He says if no agreement can be reached, the Bill will be held over until after the election.
