This market will resolve to the bracket containing first-round turnout, calculated as total votes cast divided by total registered voters, both as published in INEC's final national declaration (Form EC8E), rounded to two decimal places. If the election is postponed, the rescheduled first round is used, up to 31 March 2027. The resolution source is INEC.

Turnout in 2023 was about 27%, the lowest since Nigeria's return to civilian rule in 1999. In 2019 it was about 35%.