Mr Uko, who is currently representing Ibesikpo Asutan State Constituency in the House of Assembly, contested the PDP primary for the Uyo Federal Constituency.
He was defeated by a fellow state lawmaker, Mark Esset, who scored 75 votes at the Sunday’s primary, while Mr Uko scored 15 votes.
Emmanuel Obot, a former federal lawmaker, polled 37 votes in the primary.
The remaining two other aspirants, Lawrence Udosen and Ekemini Ukim, did not score a single vote.
Glory Edet, a former commissioner for agriculture in the state, won the party primary for the Ikono/Ini Federal Constituency, while Okpolupm Etteh, a former commissioner for special duties in the state, won in Eket Federal Constituency.
The current member representing Ikono/Ini Federal Constituency, Emmanuel Ukpong-Udo, had refused to take part in the primary, citing an existing court order in a case against the PDP delegates election in the state.
Paul Ekpo, a former PDP chairman in Akwa Ibom State, won in Etinan Federal Constituency, while Idongesit Ntekpere won in Ikot Ekpene Federal Constituency.
Ime Okon, a former state lawmaker, won in Itu/Ibiono Ibom Federal Constituency, while Martins Esin won in Oron Federal Constituency.
Meanwhile, three serving federal lawmakers, Unyime Idem (Ukanafun/Oruk Anam Federal Constituency), Aniekan Umanah (Abak Federal Constituency) and Uduak Odudoh (Ikot Abasi Federal Constituency) won the primaries in their respective areas.
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