The African Union (AU) Tuesday called Sunday's presidential election in Cote d'Ivoire a historical breakthrough, and urged the country's leading politicians to stay calm and accept the poll results without resorting to violence. 'This is certainly a historic vote, which marks a crucial step in the process for a way out of the crisis in Cote d'Ivoire,' said Commission Chairperson, Jean Ping. Nearly six million Ivorians went to the polls for the first time in several years to elect a president to run their country.