That is highly questionable. If it were so, then Sharon would agree to the referendum on his unilateral withdrawal plan that all sides are requesting. The fact that he is willing to tear apart the Likud to avoid it speaks volumes.
"Bush who has the four-year record of standing up for Israel's right of self-defense. He has earned the trust of Israelis at a time when they most need a stalwart ally to make this plan succeed - and to help turn Palestine into a peaceful neighboring state."