Almost a quarter of MPs calling for a review into the parliamentary sleaze watchdog have previously been found to have broken rules after being investigated by the regulator.
Fifty-nine MPs have backed an amendment that would reject a decision by the Committee on Standards, a cross-party group of MPs, to suspend Conservative MP Owen Paterson for breaching lobbying rules.
Among those who supported Paterson are Conservative MP Richard Drax, who failed to declare a grouse moor, and Tory MP David Morris, who asked questions in Parliament about a firm he had received a £10,000 donation from.