Speaking after his election Tuna said: "I believe I will always have your support with me. I will try to be worthy of your trust."
The Justice and Development Party (AK Party) announced Tuna as their candidate for Ankara's new mayor earlier on Monday. AK Party Vice Chairman Erol Kaya announced Tuna's candidacy during the party's group meeting.
60-year-old Tuna served as the mayor of Sincan since 2009 and a deputy from Ankara between 2002 and 2007.
Following the mayors of Istanbul, Bursa, Niğde and Düzce, Gökçek was the fifth AK Party mayor who resigned from the post.
In a landmark speech this summer, President Recep Tayyip Erdoğan said that there was "metal fatigue" within the AK Party and took up the task of rejuvenating it ahead of three crucial elections in 2019: local elections, parliamentary elections and presidential elections.
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