No not Erdogans, they were by MHP, nationalist party, and another leader of a party was caught to in sextape scandal, Deniz Baykal, it was last year thou, he was the leader of CHP (republican party) which is the main opposition of AKP (Erdogans party). After that scandal, the party's politic changed, and some are positive that that might help them to win the election, but I don't think so, Erdogan will win it again, and they will probably collect 35-40 percentage of voting, while CHP only around 25%.
I hope CHP (the republicans) wins thou..