Israel's Foreign Minister Tzipi Livni gestures after casting her ballot at a polling station in Tel Aviv September 17, 2008. Members of Israel's ruling party began voting on Wednesday for a new leader to replace Prime Minister Ehud Olmert, who has promised to resign following a corruption investigation in which he faces indictment. But whether Livni or fellow cabinet minister Shaul Mofaz secures the support of a majority of the 74,000 members of the centrist Kadima party, Olmert may stay on as caretaker premier for weeks or months -- and Israel's fractious coalition politics could yet mean an early parliamentary election. REUTERS/Bernat Armangue/Pool (ISRAEL)