OY:

Kadima sends draft coalition pact to Labor (JTA, 10/12/2008)

Labor would be the senior partner in a new government, according to a draft coalition agreement reportedly sent on by Kadima. [...]

According to Ynet, the agreement would make Labor the senior partner in the new government, with its chairman, Ehud Barak, serving as a senior deputy prime minister and playing a significant role in negotiations with Syria.