more vulnerable than in previous elections.
A huge crowd of supporters cheered Mr Kilicdaroglu, a former civil servant, as he was chosen by a six-party opposition alliance.
Known as "Gandhi Kemal" or "Turkey's Gandhi" for his resemblance to Indian civil rights leader Mahatma Gandhi, the quiet-spoken 74 year old offers a radically different vision in both substance and style to the fiery, charismatic Mr Erdogan's.
However, some of Mr Kilicdaroglu's allies fear he lacks drawing power. มวยพักยก458
He promised his supporters that he would govern Turkey through consensus and consultation.
"Our table is the table of peace," he said, quoted by Reuters news agency. "Our only goal is to take the country to days of prosperity, peace and joy."
He also said he would return the country to a parliamentary system - Mr Erdogan oversaw a transition to a presidential system in 2018, gaining