Herzog and Yechimovich (R), in better times
Herzog and Yechimovich (R), in better timesYonatan Sindel/Flash90

Zionist Union voters support MK Shelly Yechimovich the most for party leadership, a Knesset Channel poll Monday reveals, amid internal struggle in one of Israel's biggest political parties. 

24% of respondents chose Yechimovich to replace current party leader and Opposition Leader MK Yitzhak Herzog; 21% chose MK Erel Margalit; 15% would re-elect Herzog; and 13% chose MK Amir Peretz. Yechimovich led the Labor party until 2013. 

Herzog has faced intense criticism this month for his efforts to join Prime Minister Binyamin Netanyahu's coalition, despite Zionist Union's campaign slogan of "It's us or him." 

Several MKs threatened to separate from the Zionist Union in the event the party joined the government, saying it betrayed the voting public by considering joining a right-wing government. 

Meanwhile, polls during coalition talks between the two parties showed the majority of Israelis were against a unity government - including some 60% of Zionist Union voters. 

Herzog has also faced widespread criticism for allegations of corruption against him, which were only recently dropped.