ISTANBUL, May 28 (AFP) - Polling stations opened Sunday in Turkey's first-ever runoff election, where conservative President Recep Tayyip Erdogan is the firm favourite to extend his two decades of Islamic-rooted rule to 2028.

Voting began at 8:00 am (0500 GMT) and will close at 5:00 pm. Erdogan won the first round on May 14 but fell just short of an outright majority against his secular challenger Kemal Kilicdaroglu.