By leaving Likud, Ariel Sharon has put in motion a sequence of events that can't help but eventually undermining the word "Likudnik".
Luckily, Benjamin Natanyahu is likely to take over, so the word will still fit.
By the way, as a result of reforms in the Israel "Constitution" in the early 1990s, the Prime Minister is directly elected.
Here is The Australian with the news about Sharon and 14 of 40 Likud MKs splitting.
Bloody Judean People's Front. Splitters!