Kadima acting chairman for the March elections. Kadima won 29 seats, and was asked to form a government by president Moshe Katsav. Olmert formed a coalition with Labor, Shas and Gil, the government being sworn in on 4 May. Yisrael Beiteinu joined the coalition in October 2006, but left again in January 2008 in protest at negotiations with the Palestinian Authority. Olmert resigned as party leader in 2008, resulting in a leadership election, held on 17 September. The vote was won by Tzipi Livni, who beat Shaul Mofaz, Meir Sheetrit and Avi Dichter. Following her victory, Livni failed to form a
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