 In the 2008 general election, Sivarasa was elected as the Member of Parliament for Subang, defeating his opponent by a 6,000 vote majority; he went on to keep the seat in the 2013 general election.In the 2018 general election, Sivarasa was reelected for his parliamentary seat which was renamed as Sungai Buloh in an earlier redelineation exercise.Sivarasa was appointed Deputy Minister of Rural Development of Malaysia and sworn in on 2 July 2018 in the presence of His Majesty the Yang di Pertuan Agong of Malaysia.