Internet in Turkey has been slow due to government throttling after a standoff between police and CHP supporters in Istanbul.
Istanbul's municipality faces further crackdown as 22 arrest warrants are issued, following Mayor Ekrem İmamoğlu's arrest and mass protests against alleged corruption charges.
There is currently no obstacle for İmamoğlu, who was announced as the CHP's presidential candidate, to be elected despite his arrest.
Protests erupted on Wednesday after Istanbul Mayor Ekrem Imamoglu was arrested following a dawn raid of his residence as authorities investigated allegations of corruption and terrorism.