Recep Tayyip Erdogan's supporters are celebrating after Turkey's long-time president won Sunday's vote, securing another five years in power.

"The entire nation of 85 million won," he told cheering crowds outside his enormous palace on the edge of Ankara.

But his call for unity sounded hollow as he ridiculed his opponent Kemal Kilicdaroglu - and took aim at a jailed Kurdish leader and the LGBT community.

The opposition leader denounced "the most unfair election in recent years".