The Zionist Union was a centre-left political alliance in Israel. It was established in December 2014 by the Israeli Labor Party and Hatnuah to create a joint electoral list to contest the 2015 elections with the hope of unseating Prime Minister Benjamin Netanyahu. It failed to do so but did come in second place with 24 seats in the Knesset, forming the official opposition. However, tension between the Union's competing factions resulted in its dissolution in early January 2019, ahead of that year's April election.

The Israeli Labor Party, commonly known as HaAvoda, is a social democratic and Labor Zionist political party in Israel. The party was established in 1968 by a merger of Mapai, Ahdut HaAvoda and Rafi. Until 1977, all Israeli prime ministers were affiliated with the Labor movement. The current party leader is Merav Michaeli, who was elected in January 2021.