The Returning Officer of the Independent National Electoral Commission, Sani Ibrahim, who announced the results on Saturday, said the lawmaker secured 41,573 votes to defeat his closest challenger, Yushau Salisu of the New Nigeria Peoples Party, who got 34,831 votes.
The Saturday supplementary election was held in eight wards in Tudunwada LGA.
INEC had announced Doguwa as the winner of the February 25 election for the federal constituency but later declared it inconclusive.
There were reports of overvoting and disruption of voting in some polling units in the area.
At the time the election was declared inconclusive, Doguwa was leading with 39,732 votes while Salisu had 34,798 votes.
Doguwa will be serving his fifth term when the 10th assembly is inaugurated in June.
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