Demirtaş and Yüksekdağ remained co-leaders during the June 2015 general election, the party's first. The HDP came in fourth place with 13.12% of the vote, and 80 of 550 parliamentary seats. Celebrating the victory, Demirtaş said: “From now on, the HDP is Turkey’s party. The HDP is Turkey, Turkey is the HDP.
Atşkes ve barış sürecinde BDP Eş Genel Başkanlığı görevine devam eden Demirtaş, 22 Haziran 2014’te, Figen Yüksekdağ ile birlikte Halkların Demokratik Partisi’nin (HDP) Eş Genel Başkanı seçildi.