Nation holds election as security fears weigh heavy

Early voters in Istanbul sharply divided in their views on return to single-party rule or coalition

Turks began voting on Sunday amid worsening security and economic worries in a snap parliamentary election that could profoundly impact the divided country's trajectory and that of President Tayyip Erdogan.

The parliamentary poll is the second in five months, after the ruling AK Party founded by Erdogan failed to retain its single-party majority in June.