An internally displaced woman casts her ballot at a polling station at Abu Shouk IDP's camp in Al Fasher, northern Darfur April 11, 2010. Sudanese queued to vote on Sunday in the first elections for almost a quarter of a century that will test the fragile unity of their country but which have already been marred by allegations of fraud. REUTERS/Zohra Bensemra (SUDAN - Tags: POLITICS ELECTIONS)