Maybe settlers do enjoy some level of support at the top, but the main reason for keeping things as they are is not their influence. It clear understanding by the people of Israel, who their enemy are are the results of concessions to this enemy. Look no further than Gaza strip. It was probably a right thing to leave it, from self interest point of view, but look what we have there now... I dont remember much rocket fire before our troops left it.
Rocket alarm sirens sound in southern Israel (Haaretz)
from the article: In Israel, the revolution has already begun