On the presidential ballot, voters will choose between President Recep Tayyip Erdogan and leading opposition candidate Kemal Kilicdaroglu, Muharrem Ince, and Sinan Ogan.24 political parties and 151 independent candidates are vying for seats in the 600-member Turkish parliament.Meanwhile, in Istanbul, President Recep Tayyip Erdogan held a mass rally with at least 1.7 million people attending.