Presidential election in Guinea-Bissau to test stability of country Electoral officials prepare before 700,000 Guinea-Bissau voters are called to the polls on Sunday for a test election in this small West African country plagued with chronic political instability. For the first time, a president has reached the end of a five-year term without being murdered or dismissed by a coup d'état. A political analyst says imcumbent José Mario Vaz is in a bad position. His opponent, the candidate of the PAIGC Domingos Pereira, the party that won the legislative elections last March, is the favourite. IMAGES AND SOUNDBITES