Senator Mark Golding is the new People's National Party (PNP) Chairman of the constituency of St. Andrew Southern.
He defeated former Jamaica Urban Transit Corporation (JUTC) Managing Director Colin Campbell during the poll in the constituency on Saturday.
The third candidate, Dr. Wesley Morris, pulled out of the race.
The results came shortly before five o'clock with PNP Deputy General Secretary Luther Buchanan announcing a landslide victory for Senator Golding.
Golding polled 70 votes while Campbell garnered eight votes. One ballot was deemed spoilt.
Golding said he plans to celebrate before getting down to business.
The sitting Member of Pariament, Dr. Omar Davies, is expected to retire from parliament shortly, clearing the way for Golding to contest the resulting by-election to replace him as MP for the constituency.