Returning Officer Michael Are announced Tkatchenko as the returning Moresby South MP at 3.45pm today.
Flanked by incumbent NCD Governor Powes Parkop and Prime Minister Peter O'Neill, Tkatchenko signed the official writ for the seat confirming his victory.
It was a landslide win for Tkatchenko who, according to the final results, polled 19,983 votes, surpassing the absolute majority needed, which is 19,643.
In second place was Samson Kirilyo who polled 5,735 followed by Anna Skate, who polled 4,448 votes.