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Caption:Israeli Labour Party leader and co-leader of the Zionist Union coalition, Isaac Herzog, speaks with citizens as he campaigns on the eve of Israel's general election in the Labour Party headquarters in the coastal Israeli city of Tel Aviv on March 16, 2015. AFP PHOTO / GIL COHEN-MAGEN (Photo credit should read GIL COHEN MAGEN/AFP/Getty Images)
Caption:Israeli Labour Party leader and co-leader of the Zionist Union coalition, Isaac Herzog, speaks with citizens as he campaigns on the eve of Israel's general election in the Labour Party headquarters in the coastal Israeli city of Tel Aviv on March 16, 2015. AFP PHOTO / GIL COHEN-MAGEN (Photo credit should read GIL COHEN MAGEN/AFP/Getty Images)

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Could this man be Israel's prime minister?

Isaac Herzog is running against current Israeli Prime Minister Benjamin Netanyahu. But who is he? CNN's Elise Labott has more.

Could this man be Israel's prime minister?

Isaac Herzog is running against current Israeli Prime Minister Benjamin Netanyahu. But who is he? CNN's Elise Labott has more.