| Election Name: | 2015 Zanzibari presidential election |
| Country: | Zanzibar |
| Type: | presidential |
| Vote Type: | Popular |
| Ongoing: | no |
| Previous Election: | 2010 Zanzibari general election |
| Previous Year: | 2010 |
| Next Election: | 2016 Zanzibari general election |
| Next Year: | 2016 |
| Image1: | Ali Mohamed Shein, September 2014 (cropped).jpg |
| Nominee1: | Ali Mohamed Shein |
| Party1: | Chama Cha Mapinduzi |
| Popular Vote1: | Annulled |
| Colour2: | 00BFFF |
| Nominee2: | Seif Sharif Hamad |
| Party2: | CUF |
| Popular Vote2: | Annulled |
| President | |
| Before Election: | Amani Abeid Karume |
| Before Party: | Chama Cha Mapinduzi |
| After Election: | Ali Mohamed Shein |
| After Party: | Chama Cha Mapinduzi |
General elections were held in Zanzibar on 25 October 2015 alongside the 2015 Tanzanian general elections. Incumbent president of Zanzibar Ali Mohamed Shein was running for his second term against Zanzibar First Vice President Seif Sharif Hamad.[1]
Following the vote, the Zanzibar election commission annulled the elections citing irregularities and a rerun was held on 20 March 2016.[2]
There were 14 candidates that qualified to run for the presidential election in 2016.[3]
| Khamis Idd Lila | Alliance for Change and Transparency (ACT) | |
| Juma Ali Khatib | Association of Farmers Party (ADA-TADEA) | |
| Alliance for Democratic Change (ADC) | ||
| Said Soud Said | Association of Farmers Party (AFP) | |
| Ali Mohamed Shein | Chama Cha Mapinduzi (CCM) | |
| Ali Khatib Ali | Chama Cha Kijamii (CCK) | |
| Mohammed Rashid Masoud | Chama cha Ukombozi wa Umma (CHAUMA) | |
| Seif Sharif Hamad | Civic United Front (CUF) | |
| Tabu Mussa Juma | Demokrasia Makini (D-Makini) | |
| Abdulla Kombo Khamis | Democratic Party (DP) | |
| Kassim Bakari Ali | Jahazi Asilia | |
| Issa Mohammed Zonga | Sauti ya Umma (SAU) | |
| Seif Ali Iddi | National Reconstruction Alliance (NRA) | |
| Hafidh Hassan Suleiman | Tanzania Labour Party (TLP) |
There were 180 candidates from various parties fighting for 54 electable seats in the Zanzibar House of Representatives.
The votes of the elections were annulled by the Zanzibar Election Commission, citing irregularities in the process and put forward a recommendation for a re-run that was held in 2016. However, only local Zanzibar election results were annulled, the annulment, did not affect the overall outcome of the national presidential elections, meaning that the same ballots that were disqualified for the Zanzibari election were still included in the national count.[4]