Mauritanian president and candidates vote in presidential poll Mauritania's outgoing president Mohamed Ould Abdel Aziz calls for voters to choose a successor who will lead the country "on the right path of security and stability" after he casts his vote in Nouakchott. The leading party candidate Mohamed Ould Ghazouani and opposition candidate Sidi Mohamed Ould Boubacar also cast their vote in the presidential poll. IMAGES AND SOUNDBITES - TO COMPLETE VIDI1HQ7SW_EN, VIDI1HQ6QR_EN AND VIDI1HQ6LC_EN IN BETTER QUALITY