Tzipi Livni if they won enough votes, though Livni also stated she would step back if her participation presented a hurdle to coalition building. Widely seen as being a "game-changer" in what was initially thought would be an effectively uncontested election resulting in Netanyahu's reelection, the partnership between Livni and Herzog created significant momentum and galvanized Israel's center-left voters, who saw the partnership as having a realistic chance to form a government, something which had been absent in the previous elections. Indeed, many opinion polls during the campaign showed Likud and the Zionist Union in dead heat, and the few weeks leading
Tzipi Livni the UN Security Council was influenced by his talks with Livni and former president Shimon Peres, who said such a move could serve the political interests of those opposing the peace process. After the dissolution of the Knesset in December 2014, Labor leader Isaac Herzog and Livni announced a joint slate between Labor and Hatnuah, called the Zionist Union, to contest the 2015 elections in an effort to keep Netanyahu, leader of the Likud Party, from securing a fourth term as prime minister. They proposed to share the role of prime minister (an arrangement known in the Knesset as rotation)