Mr. Eisenkot, an ex-military chief leading in the polls, calls the Israeli prime minister an “anti-leader.” But his low-key campaigning style is worrying supporters.
The choice drew condemnation from Israel over Ms. Pillay’s role leading a U.N. commission that said the country had committed genocide against Palestinians.
Ms. Pillay, a human rights lawyer, was drawn into the international spotlight last year as chair of a commission that found that Israel had committed genocide in Gaza.