He polled 396 votes as against 367 votes by his contestant Nii Noi Nortey.
Two votes were declared invalid and the total number of eligible voters was 765.
The election, held at the NPP Headquarters at Asylum Down, was conducted and supervised by officials from the Electoral Commission and officers of the NPP.
Mr Addison in an interview with the Ghana News Agency called for unity among the rank and file and to work together as a team to win the seat from the National Democratic Congress (NDC).
He said he did not win the primary because he played a lead role in the NPP 2012 election petition in court but his victory was on hard work and merit.
Mr Addison said he would ensure that everybody would be on board to undertake a vigorous campaign to win votes for the party in the November 2016 presidential and parliamentary elections.
Nii Adjei Tawiah, one of the contestants in the primary, expressed gratitude to his supporters who voted for Mr Addison and gave the assurance that they would all come together to work hard to kick out the NDC administration.
Source: GNA
