The Goverment has the numbers to progress a bill next week to enable police use of video surveillance while investigating crimes.
But the Act Party announced this afternoon they would support the bill at its first reading on the condition that it would be subject to 36-hour select committee scrutiny.
"If the Act caucus was happy with the bill as it came out of select committee, we would support it," parliamentary leader John Boscawen said.
The bill would suspend the effect of the Supreme Court decision earlier this month into the Urewera case.
With United Future and Act, the Government no longer needs Labour Party support for the bill to pass its first reading.