Although Morny sat as deputy for Clermont-Ferrand from 1842 onwards, he took at first no important part in party politics, but he was heard with respect on industrial and financial questions. He supported the government of Louis Philippe, because revolution threatened his commercial interests, but before the Revolutions of 1848, by which he was temporarily ruined, he considered converting to the Bourbon legitimist cause represented by the Comte de Chambord. His attitude was expressed by the witticism with which he is said to have replied to a lady who asked what he would do if the Chamber were "swept out." "Range myself on the side of the broom handle," was his answer. Presently he was admitted to the intimate circle of his half-brother Louis Napoleon, and he helped to engineer the "coup d'état" of 2 December 1851 on the morrow of which he was appointed to head the ministry of the interior.