2012 Hougang by-election|
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| Registered | 23,368 |
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| Turnout | 21,978 (94.05%) 0.31% |
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The by-election was held on 26 May 2012. The by-election was to replace the vacant seat after the incumbent MP, Yaw Shin Leong was expelled from the Workers' Party and his extramarital affairs. This was the 16th by-election since the first election, and the first by-election after over 19 years since 1992. This was the first by-election in Singapore since the new millennium and the 21st century.
On Polling day, WP's candidate Png Eng Huat was declared Parliament-elect for Hougang SMC, winning 62.08% of the vote.