Dr Tan Cheng Bock: Will PM Lee call for more than one by-election?

Yahoo! News Singapore, 10 Apr 2012
Is Prime Minister Lee Hsien Loong planning something more than just a by-election at Hougang?
Former presidential candidate Dr Tan Cheng Bock raised questions on Sunday as to why the prime minister has not yet called for a by-election to be held in Hougang after the seat in the single member constituency (SMC) was left vacant due to the Workers’ Party expulsion of Yaw Shin Leong in February.
In his latest blog post, Tan speculated that “a possible strategy (for PM Lee) would be to call for a by-election in his Ang Mo Kio (AMK) ward together with Hougang constituency”. Full story