Benin's Prime Minister Lionel Zinsou gained 28.4 percent of votes in a presidential election and will face a run-off against prominent businessman Patrice Talon, Reuters cited results from the national electoral commission as showing on Tuesday. Sunday's election, which was contested by 33 candidates, is to choose a successor to President Thomas Boni Yayi, who is stepping down from power in the small West African state after two terms as mandated by the constitution.