The popular Ynet news website quoted an official it did not identify as saying: "It's in Israel's interest to have Abbas stay in office."
"Netanyahu does not want Abu Mazen (Abbas) to leave," another told the Maariv newspaper. "He is careful not to embrace him too tightly, but clearly he is the candidate who is the lesser evil among the Palestinian leadership."
I don't think this needs much comment.
[Edit] I'll make this one comment. I wish Abbas had the courage to resign effective today, but if he had been a courageous man, Israel would have chosen someone else as sham leader of the Palestinians. I have the same realization when I realize what a fundamentally stupid person Hosni Mubarak is.