Zimbabwe's governing party has endorsed Robert Mugabe as its candidate for next year's presidential elections. The vote by delegates at the Zanu-PF conference in the capital, Harare, allows the 83-year-old president to seek a sixth term in office in March. Reuters news agency says the announcement of his selection was followed by cheers by party delegates. Critics say Mr Mugabe's continued grip on power will prolong the country's economic woes. He has been in power since independence in 1980 and has resisted pressure to step down.