Past presidents all under CCM
- There were unconfirmed reports that popular candidates within the party’s rank and file had been dropped.
- The Constitution provides that if the president comes from Zanzibar, the vice president shall be from the Mainland and vice-versa. The rotation of the presidency, just like the alternation between Christians and Muslims are unwritten traditions.
- Julius Nyerere : The founding father of the nation; he was a Mainlander and a Christian. He ruled from 1961- 1985.
- Ali Hassan Mwinyi: The second president of the republic; he hailed from Zanzibar and is a Muslim. He served two terms from 1985- 1995.
- Benjamin Mkapa : The third president of the republic; he is from the Mainland and a Christian. He served from 1995 to 2000.
- Jakaya Kikwete: The current and fourth president of the republic. A Muslim Mainlander whose second and final term comes to an end this year. He took over in 2000.