Israeli Prime Minister Benjamin Netanyahu and his wife Sara wave as Netanyahu speaks following the announcement of exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Ammar Awad 

A supporter of Israeli Prime Minister Benjamin Netanyahu's Likud party waves flags, one bearing the name of U.S. President Donald Trump, as the crowd reacts to exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Ronen Zvulun 

Israeli Prime Minister Benjamin Netanyahu and his wife Sara react as they stand on stage following the announcement of exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Ronen Zvulun 

Benny Gantz, head of Blue and White party, delivers a speech following the announcement of exit polls in Israel's parliamentary election at his party headquarters in Tel Aviv. REUTERS/Amir Cohen 

Israeli Prime Minister Benjamin Netanyahu is greeted by supporters of his Likud party as he arrives to speak following the announcement of exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Ronen Zvulun 

Benny Gantz, head of Blue and White party, holds hands with his party candidates Yair Lapid, Moshe Yaalon and Gaby Ashkenazi, as they react to exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Corinna Kern 

Benny Gantz, head of Blue and White party, kisses his wife Revital as he delivers a speech following the announcement of exit polls in Israel's parliamentary election at his party headquarters in Tel Aviv. REUTERS/Amir Cohen 

Israeli Prime Minister Benjamin Netanyahu and his wife Sara react as they stand on stage following the announcement of exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Ammar Awad 

Israeli Prime Minister Benjamin Netanyahu hugs his wife Sara as they stand on stage following the announcement of exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Ronen Zvulun 

Supporters of Benny Gantz's Blue and White party react to exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Corinna Kern 

Supporters of Benny Gantz's Blue and White party react to exit polls in Israel's parliamentary election at the party headquarters in Tel Aviv. REUTERS/Corinna Kern 

Benny Gantz, leader of Blue and White party, celebrates with supporters and his wife Revital after casting his ballot as Israelis began voting in a parliamentary election, near a polling station in Rosh Ha'ayin. REUTERS/Nir Elias 

Ultra-Orthodox Jewish boys stands next to their father behind a voting booth at a polling station in Jerusalem. REUTERS/Ronen Zvulun 

Prime Minister Benjamin Netanyahu casts his vote with his wife Sara in Jerusalem. Ariel Schalit/Pool via REUTERS 

Ayman Odeh, leader of Hadash-Ta'al party, holds up his ballot paper as he stands behind a voting booth and carries his son on his shoulders at a polling station in Haifa. REUTERS/Ammar Awad 

Israeli border policewomen wait to vote in national elections a day before polling stations open in the rest of Israel, at a base in Beit Horon settlement in the Israeli-occupied West Bank, April 8. REUTERS/Nir Elias 

Benny Gantz, leader of Blue and White party, takes a selfie together with supporters outside the party headquarters in Tel Aviv, April 8. REUTERS/Amir Cohen 

An Israeli border policewoman stands behind a mobile voting booth as she votes at a base in Beit Horon settlement in the Israeli-occupied West Bank, April 8. REUTERS/Nir Elias 

An election campaign billboard depicting Benny Gantz, leader of Blue and White party, is seen in Tel Aviv, April 8. REUTERS/Amir Cohen 

Likud party supporters, one wearing a mask depicting U.S. President Donald Trump, hold election campaign placards, one depicting Israeli Prime Minister Benjamin Netanyahu, as they walk past stalls in Mahane Yehuda Market in Jerusalem April 7. The placard reads in Hebrew: 'Netanyahu Protector of Israel.' REUTERS/Ronen Zvulun 

Benny Gantz, leader of Blue and White party, speaks at an election campaign event in Ashkelon, April 3. REUTERS/Amir Cohen 

Supporters of Zehut, an ultra-nationalist religious party, hold an inflatable joint in an election campaign event in Tel Aviv, April 2. REUTERS/Corinna Kern