Update: PAP's Sitoh gives himself a 50:50 chance of keeping Potong Pasir seat

PEOPLE'S Action Party (PAP) MP Sitoh Yih Pin has given himself a 50:50 chance of keeping his seat in Potong Pasir in the coming general election (GE).

"When you only win by 114 votes and you've lost twice, you take nothing for granted," Mr Sitoh told reporters at a press conference announcing he would be standing for re-election.

The MP for the ruling party, who is 51, beat Singapore People's Party Lina Chiam in the last GE for the Single Member Constituency which was held by Mrs Chiam's husband, Chiam See Tong, for 27 years.

Mr Chiam had left the ward to contest in the neighbouring Bishan-Toa Payoh GRC in the 2011 GE.

Mr Sitoh is tipped to face Mrs Chiam and independent candidate Tan Lam Siong in the 2015 GE expected to take place next month.

Read more about the coming Singapore General Election here.