Jeremy Corbyn will face David Cameron at Prime Ministers Questions for the first time as Labour leader later.
After a shaky start to his tenure, Corbyn will be planning to show his radical left-wing approach can trouble the Prime Minister and the Conservative Party.
Mr Corbyn has signalled he wants to make the weekly Commons showdowns "less theatrical" and more "factual".
He has also suggested that his six questions could be shared out among senior colleagues in future.
The Tory ranks are under orders to restrain themselves from shouting down Labour's new chief, for fear such aggression could backfire by invoking public sympathy.
But Mr Corbyn's words to the TUC conference earlier this week showed he will not shy away from strong language.
The Islington North MP accused ministers of "declaring war" on workers with trade union restrictions and "knowingly" passing welfare changes that resulted in suicides - calling the Conservatives "poverty deniers".
The whole of Westminster will be watching the Labour benches closely for signs of how they are adjusting to Corbyn's regime as rumours of discord among the more centre-left ranks continue to rumble on.