Khonghun began his political career as a member of the
Sangguniang Panlalawigan of Zambales, serving two consecutive terms in the provincial legislature from July 2004 to June 2010. Running for the position of vice governor of Zambales for the
2019 election, Khonghun noted rumors of his family being involved in the illegal drug trade is being spread. He alleged this comes from his political rivals. As anticipated by Khonghun, his and his father's name was among those included in President
Rodrigo Duterte's "narco-list"; a list of personalities alleged to be involved in the illegal drug trade. Duterte is waging a deadly
national war on drugs at the time. The Khonghuns denied links to illegal drugs. His girlfriend and actress,
Aiko Melendez also defended Khonghun questioning the timing of the allegations. Despite this, Khonghun was elected vice governor of Zambales ganering more votes than incumbent Angel Magsaysay-Cheng. He won and assumed office on June 30, 2022. He emerged as part of the "Young Guns" bloc during the
19th Congress making critical statement on former president
Rodrigo Duterte and Vice President
Sara Duterte. The bloc is aligned to House Speaker
Martin Romualdez and President
Bongbong Marcos' administration. He ran in the
2025 election under
Lakas–CMD. == Personal life ==