Only two opposition MPs were elected -- with Chiam retaining his Potong Pasir seat as a Singapore People 's Party candidate .
Hougang also being retained by Low Thia Khiang of the Worker 's Party .
Only two opposition MPs were elected -- with Chiam retaining his Potong Pasir seat as a Singapore People 's Party candidate , and Hougang also being retained by Low Thia Khiang of the Worker 's Party .