With French Socialists' best hope of winning the presidency now in jail on sex assault charges, the party is trying to rally fast -- and agree on who should step up to take on incumbent Nicolas Sarkozy next year. IMF head Dominique Strauss-Kahn polled as the person most likely to beat Sarkozy in next April's election, until he was arrested in New York accused of sexually assaulting and trying to rape a hotel maid. Duration: 01:52.