Prime Minister of Israel to become acting prime minister in the weeks leading to the elections. He was voted by the cabinet to be interim prime minister just after the 2006 elections, when Sharon had reached 100 days of incapacitation. He thus became Israel's third interim prime minister, only days before forming his own new government as the official Prime Minister of Israel. In 2008, amid accusations of corruption and challenges from his own party, Olmert announced that he would resign. However his successor Tzipi Livni was unable to form a coalition government. In the election in the following year, while Kadima won the
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