Carlos Ahenkorah polled 503 votes while Irene Naa Torshie Addo garnered 273.
The other contender, Adwoa Amoakoa had a meager 2 votes.
There had been tension in the constituency following the previous disqualification of Carlos Ahenkorah.
Mr. Ahenkorah resisted the disqualification by taking the matter up with the National Steering Committee of the NPP, which eventually cleared him to contest.
Although primaries were also taking place in five other constituencies, all eyes were on the Tema West Constituency, which has since 1996 when the seat fell to the NPP, become a hotbed of political activities during the NPP's internal elections.
Madam Naa Torshie Addo was seeking her third term bid in Parliament after she entered the house in 2008.
Her defeat has been largely blamed on her poor human relations, and alleged arrogance and divisive tactics.
Saturday's voting, counting and declaration of results were all done under heavy security presence.
Supporters of Mr. Carlos Ahenkorah are in a jubilant mood over the victory. Some supporters stripped naked in jubilation even before the official results were declared.
According to TV3's Tema Correspondent, Josephine Frimpong, one of the key persons who led the jubilation is a former Majority Leader in Parliament, Abraham Osei Aidoo, who represented the Tema West Constituency in Parliament from 1996 to 2008 on the NPP's ticket.
Abraham Osei Aidoo was defeated by Naa Torshie Addo in a similar tension-filled process. It is thus not surprising seeing him excited over her defeat.
The question now remains whether or not the party can unite formidably to retain the seat for the NPP in the 2016 elections.
Mr. Carlos Ahenkorah may contest against former Local Government Minister, Samuel Ofosu-Ampofo of the NDC, who is said to be lacing his boots again for 2016 in the constituency.
In the last election in 2012, he lost by 945 votes, by gaining 39,005 as against Ms. Addo’s 39,950.
In the Juaben constituency in the Ashanti Region, incumbent Ama Pomaa Boateng was retained with 245. Her two other contenders Owusu, polled 63 whereas Abena Pokua polled 53. In the Tema Central constituency, incumbent Kofi Brako beat his contender Agyemang Prempeh who polled 95 as against 317 votes.
Meanwhile results for Kintampo North, Obom-Domeabra and Gomoa East are yet to be declared.
NPP delegates at Korle Klottey in the Greater Accra Region who turned up in their numbers Saturday to cast their ballot were left disappointed.
A group of supporters, suspected to have the backing of one of the Parliamentary aspirants, Philip Addison, secured an injunction restraining the Electoral Commission from conducting the primaries.
Although the party had indicated on Friday that it had not been served with the injunction and would be going ahead with the primary there, EC officials were not at the constituency to supervise the elections on Saturday.
Also in the Kwesimintsim constituency of the Western Region, an injunction stopped the process.
By: Ebenezer Afanyi Dadzie/tv3network.com/Ghana