三月事件
After the proclamation of the Second Constitution in 1908, he was elected deputy of Salonica and Kale-i Sultaniye (Çanakkale) into the parliament in Constantinople. Following the 31 March Incident in 1909, Cavit Bey was appointed minister of finance in the cabinet of Grand Vizier Tevfik Pasha. In the aftermath of the Savior Officer insurrection and repression of the CUP, Cavit hid in a French battleship and escaped to Marseilles. Cavit would regain his position in the wake of Grand Vizier Mahmud Şevket Pasha's assassination.