The Sejm began on 19 April (although some preliminary discussions took place days before). It took place in Warsaw and the deputies and senators in service of foreign powers declared it a confederated sejm (with decisions decided by the majority) to prevent "liberum veto" (the right of any deputy to force an immediate end to the current session and nullify any legislation that had already been passed) being used to stop it. The marshals of the Sejm were Adam Poniński, one of the nobles in Russian service, for the Crown of Poland, and Michał Hieronim Radziwiłł for the Grand Duchy of Lithuania. At least half of the deputies were bribed by the foreign powers, and others were threatened. Some deputies (Tadeusz Rejtan, Samuel Korsak Stanisław Bohuszewicz, Franciszek Jerzmanowski, Stanisław Kożuchowski, Rupert Dunin, Jan Tymowski, J. Zaremba, Michał Radoszewski, Ignacy Suchecki, Tadeusz Wołodkowicz) tried to protest, which caused delays. Out of those, Rejtan's gesture – in which he was said to have barred the doors, torn his shirt, and asked other deputies to murder him rather than Poland – became widely known, and was immortalized in a painting by Jan Matejko. By 24 April the few vocal opponents, such as Rejtan, had lost, the confederation was joined by the King and the Sejm elected a committee of thirty to deal with the various matters presented (primarily the partitioners' demands, but also some reforms to the government). The committee was to deliberate until September, and the rest of the Sejm was adjourned in the meantime.