After the military coup of 1960, once again he was elected and served as Kocaeli representative in the parliament, and this time as head of the CHP group. He was one of the focal points of internal conflicts of CHP, opposing the leader Ismet Inönü. The conflict resulted in him being ousted from the party in 1962. He was re-elected to the party's ruling committee taking second highest votes, thus joining the party again.