Netanyahu's chief challenger, Zionist Union's Herzog, says 'everything open'

"This result allows us to return to power," Herzog told supporters at party headquarters in Tel Aviv after exit polls showed a tie between the center-left Zionist Union and Netanyahu's right-wing Likud.

"We will wait for the real results - everything is open," he said, adding that he intends to "make every effort to form a real socially-minded government for Israel" and that he had already spoken to some party leaders about putting together a coalition.

(Reporting by Jeffrey Heller)