Liwale MP Zubery Kuchauka announces his decision to leave the Civic United Front (CUF) and join CCM at a meeting with members of the media in Dar es Salaam in August. Left is CCM secretary general, Dr Bashiru Ally. PHOTO|FILE
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Supporters of the idea say the move will control defection of elected leaders and stem unnecessary by-elections, which are characterized by high expenses