The only thing that could happen is if Sarkozy becomes much more unpopular, there might be a takeover of the UMP by a faction hostile to Sarkozy's - that of Villepin for example.

After all, during the current municipal electoral campaign, the right wing candidates are not mentioning their link to Sarkozy - if it becomes certain he'll lose them their MP positions, they may  revolt.

Un roi sans divertissement est un homme plein de misères