Presidential and Parliamentary elections begin in Zambia 

Voting has begun in Zambia's presidential and parliamentary elections despite campaigning marred by clashes between rival supporters. 

It is expected to be a tight race between President Edgar Lungu's governing PF party and the opposition UPND led by Hakainde Hichilema. 

For the first time, a presidential candidate must win more than 50 percent of the vote to avoid a run-off. 

Mr Lungu narrowly won the last election with 48 percent of votes. 

BBC