Turks will decide tomorrow if they want The Sultan for another 5 years, or this Kilicdaroglu guy, or some other, less likely candidate. And they also decide the fate of 600 seats in the legislation.
Do we still have all the things up Turkbernd (Allah smile on him) wrote about Turkish politics on the board?
Anyway the Prez is both the head of state and the head of government, since the position of the PM was abolished (2017). Quite strong position.

Erdog is still rocking with AKP, let's call it conservative.
Kilicdaroglu is the candidate for CHP which supposed to be Kemalist (established by him) and social-democrat.
But I remember in Turkey it's not that simple. The politics is also riddle with paranoia and conspiracies (and theories of).
They had a shit year last year, inflation and the earthquake shook the country. They are considerable factor in the Ukrainian war, in Syria and the migration issue. They are NATO country but has a working relationship with Russia. Transit country along the Belt and Road road. They also has Central Asia in their sight, Pan-Turanism ftw, supporters of Azerbaijan.
At least under Erdog. Not sure what can be expected from each side.