Polling has closed in a run-off election for the post of Jakarta's governor, seen by many as a key test for Indonesia's secular identity. The two candidates are the incumbent Basuki Tjahaja Purnama, a Christian of Chinese descent, and Anies Rasyid Baswedan, a Muslim.<br/><br/>Critics of Mr Purnama have accused him of blasphemy, heightening racial and religious tensions. Exit polls show Mr Baswedan winning but official results are still awaited.