Andrew Bolt is on a roll. As the anniversary of Tony Abbott's ousting approaches, the right-wing broadcaster has taken to grilling his guests on the achievements of Malcolm Turnbull's government.

On Monday night Peta Credlin was stumped, reluctantly offering that the government had signed a free trade agreement and kept Bill Shorten out of the Lodge by (narrowly) winning the election.

On Thursday, Bolt tried the same trick on former Victorian Liberal premier Jeff Kennett, a frequent critic of the Prime Minister, asking him whether he could name one of Mr Turnbull's achievements from the past 12 months.

"Not easily," Mr Kennett responded, though he said he "desperately" wanted the PM to succeed.