Kadima had left Sharon's original governing coalition. In the past, Shinui had also called itself a "centrist" party because it rejected both Labor's socialism (its economic policies were free-market) and the Likud's opposition to a Palestinian state (however, from an international standpoint, Shinui may have actually been on the centre-right). Justice Minister Tzipi Livni reportedly told Israel Army Radio that Kadima intended to help foster the desire for a separate Palestinian state, a move applauded by leftist Yossi Beilin. Sharon was one of the prime architects pushing for the construction of the Israeli West Bank barrier that has been criticized by
Tzipi Livni Livni and Shaul Mofaz emerged as the main rivals for the leadership. Livni won the Kadima leadership election by a margin of just 431 votes (1%). Palestinian peace negotiators were reportedly pleased with the result. As the new leader of the ruling party, Livni became prime-minister designate. Upon declaring victory, she stated "the national responsibility (bestowed) by the public brings me to approach this job with great reverence." On 21 September 2008, Olmert formally resigned in a letter submitted to president Shimon Peres, and the following day Peres formally asked Livni to form a new government. Livni faced tough negotiations