Even though the official results are not in yet, Netanyahu has declared victory for Likud on Twitter amidst celebrations after seeing results of the exit poll.
See the tweets below:
Against all odds:a great victory for the Likud. A major victory for the people of Israel!
— בנימין נתניהו (@netanyahu) March 17, 2015
— Alexander Marquardt (@MarquardtA) March 17, 2015