, first president The
Second Constitutional Era of the Ottoman Empire began shortly after Abdul Hamid II was forced to restore the constitutional monarchy after the 1908
Young Turk Revolution. The longer lasting period also saw the establishment of
many political groups and parties.
Ahmet Rıza became the first President of the Chamber in 1908. Following the 31 March Incident in 1909 an amendment to the original 1876 constitution resulted in the Chamber gaining more true political power at the expense of the non-democratically elected Senate and the Sultan. A
series of elections during this period resulted in the gradual ascendance of the
Committee of Union and Progress's (CUP) domination in politics. The second largest party was the
Liberty Party (1908 - 1910) and the
Freedom and Accord Party (1911 - 1920) () both parties led by
Mehmed Sabahaddin. The second constitutional era came to a
de facto end after the
1912 elections (known as the
Sopalı Seçimler, "Election of Clubs"), which the CUP was widely understood to have rigged in its favor. After the
1913 Ottoman coup d'état the following year and the seizure of power by the CUP triumvirate known as the
Three Pashas, the Chamber of Deputies, along with the Sultan and the Senate, ceased to exercise any meaningful political power over the government. The era formally ended after
World War I during the
Occupation of Constantinople. The last meeting on 18 March 1920 produced a letter of protest to the Allies, and a black cloth covered the pulpit of the parliament as reminder of its absent members.On April 11, 1920, the Assembly was dissolved by the Sultan under pressure from the occupying forces. Some deputies were arrested. Many of the deputies who were not arrested went to Anatolia and joined the new
assembly in Ankara. The assembly in Ankara declared at its first opening meeting that it was the continuation of the assembly in Istanbul. == March of the Chamber of Deputies ==