On Sunday, the shadow cabinet arrived at a position on the legislation: Ley negotiated changes with the government on Monday. The resulting agreement to support the bill was then endorsed by a Liberal Party meeting.
But the Nationals, internally split, could not make up their collective mind on whether to support or oppose the bill. In particular, they were unhappy about the breadth of the provision on banning extremist organisations, such as Hizb ut-Tahrir.
Canavan summed up this view when he told the ABC the measure gave the minister "way too much power to ban groups that go far and beyond organisations that would be encouraging or supporting violent acts".
By lunchtime Tuesday the Nationals had had multiple meetings of their party room.
The back story to their division and dithering was One Nation's surge, highlighted in two polls at the weekend. In Newspoll, One Nation was polling 22%, above the Coalition on 21%.