Tundu Lissu, the deputy leader of the main opposition party in Tanzania, has announced his bid to run for the party’s leadership. The current leader, Freeman Mbowe, has held the position since 2003. Lissu says he wants to enact changes in how the party deals with the Tanzanian government and within the party’s ranks. Tanzania holds presidential elections next year. Lissu tells VOA's James Butty Chadema should not take part in elections unless big changes are made in the nation’s electoral system.