Did the open opposition to Bibi 
[1]by the regime, in itself, propel him to victory? From Politico [2]:
Netanyahu also cast himself as the target of foreigners — and while he was vague about the details, pro-Netanyahu media outlets often cited the role of former Obama campaign operative Jeremy Bird, who advised a grass-roots campaign organization that opposes Netanyahu. That group also partnered with the Washington-based OneVoice Movement, an international grass-roots group that supports the two-state solution and has taken State Department funding in the past.
It is easy to paint yourself as a victim, as Netanyahu did, when your enemies are out in the open and very real.