Atiku polled 1532 to defeat his closest rival, Aminu Tambuwal, who polled 693 votes.
Others in the race were Sen. Bukola Saraki (317 votes), Gov. Ibrahim Dankwambo (111 votes), Sen. Rabiu Kwankwaso (158 votes), Ahmed Makarfi (74 votes), and Jonah Jang.
Others are Sen. David Mark (35 votes); Sule Lamido (96 votes); Atahiru Bafarawa (48 votes), Tanimu Turaki; Datti Baba-Ahmed; and Stanley Osifo.
Atiku will contest against President Muhammadu Bihari, who also on Sunday was declared candidate of the ruling All Progressives Congress (APC).