Punch Newspapers Sections Published 1:14 am Three former Presidents of the Senate have called on the Peoples Democratic Party to work hard and unite to take over the mantle of leadership of the country come 2023. In separate remarks, former senate presidents, Dr. Iyorchia Ayu, Senator David Mark, and Senator Bukola Saraki, made the call at the PDP North Central Zonal Congress held at the Aper Aku Stadium in Makurdi, the Benue State capital, on Saturday Ayu, who expressed happiness over the return of Prof. Jerry Gana, gave an assurance that the current crop of leaders of the party would team up to ensure victory for the party at all levels in 2023.