Nah, he will either be banned from participating (if he is not informing) or be controlled opposition to a "center-left" militarist government who exists to prevent a new Netanyahu coalition from coming into existence (if he is actually an agent of Shin Bet). There is also a dark horse possibility that, as happens oddly frequently to far-right leaders who become too well-known or too popular for their own good, he will be very conveniently assassinated by some terrorist (as famously happened to Kahane himself, but also his son, and "Gandhi" Ze'evi).
Nomen est omen, I guess.