A branch of the NSW Liberal Party is set to debate the merits of Sharia-style corporal punishment and a radical proposal to make citizens responsible for sentencing criminals rather than judges.

The notoriously hard-right Carlingford branch, under its colourful president George Popowski, will discuss a push to "straighten out the law and order system" by handing sentencing powers to a panel of 20 members of the public, with no more than 30 per cent from the legal fraternity.

Mr Popowski, who authored the motion, also urged the reintroduction of corporal punishment, arguing it was the "fairest" form of retribution because "we all feel the same pain".

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He proposed 10 lashes for theft of a T-shirt, 1000 lashes for stealing a car (2000 if the vehicle is damaged), 5000 lashes for punching a police officer and 20,000 lashes for murder.