Republican Party (United States) | Democratic Party (United States) | National Football League | National Register of Historic Places | National Hockey League | Australian Labor Party | Democratic Party | England national football team | Liberal Party of Canada | Liberal Party of Australia | National Basketball Association | Republican Party | National Science Foundation | Liberal Party (UK) | Social Democratic Party of Germany | National Geographic | Liberal Party | National Trust | National Endowment for the Arts | National Geographic Society | Argentina national football team | Nazi Party | National Trust for Places of Historic Interest or Natural Beauty | National Park Service | National League | Australian National University | National Guard | National Geographic Channel | New Democratic Party | Progressive Conservative Party of Canada |
In 2011, Heng contested in Whampoa Single Member Constituency (Whampoa SMC) which was carved out of Jalan Besar GRC and met up against veteran Ken Sun from the National Solidarity Party.