on 15 august 2015, the people's action party (pap) announced that koh would be part of a six-member pap team contesting in ang mo kio grc led by prime minister lee hsien loong in the 2015 general election. following the results of the election, koh was elected into parliament when the six-member pap team won and clinched 78.64% of the electorate's valid votes in the constituency.