 In the 1965 elections the party increased its share of the vote again, to 1.9%, overtaking Cooperation and Brotherhood to regain its place as the most popular Israeli Arab party.It joined Levi Eshkol's coalition government, and A-Dahar was replaced by Seif-El-Din El-Zubi, previously an MK for the Democratic List of Nazareth (in the first Knesset) and the Democratic List for Israeli Arabs (in the second and third Knessets).During the Knesset session the party briefly merged with Cooperation and Brotherhood to form Cooperation and Development, though the union split up soon after its formation.