Singapore Democratic Party
political party in Singapore

The Singapore Democratic Party (SDP) is a social liberal political party in Singapore. Founded in 1980 by Chiam See Tong, the party gained its first seat in Parliament in 1984 when Chiam was elected the MP for Potong Pasir. In the 1991 general election, the SDP achieved its peak electoral success, securing three parliamentary seats with Ling How Doong and Cheo Chai Chen winning in Bukit Gombak and Nee Soon respectively. However, internal conflicts emerged in 1993, leading to Chiam's departure from the party in 1996 to join the Singapore People's Party (SPP), a party founded by former SDP members who supported Chiam. He was succeeded by Chee Soon Juan, who has served as Secretary-General since then.
The SDP identifies as a centrist to centre-left party, drawing on both liberal and social democratic ideologies. Over the years, it has been shaped by different leadership styles and internal factions, particularly under Chiam and Chee, whose visions for the party diverged significantly. The party has had no parliamentary representation since 1997. While some party members lean towards centre-left ideals, others align with centrist or even centre-right positions. Since the 2000s, the party has increasingly focused on promoting human rights and democratic reforms.
This brief starts where responsible research should: with the source description of “Singapore Democratic Party” as political party in Singapore. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as political party in Singapore. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 27, 2026. The linked authority identifier is Q2289041. VIAF identifies the subject as 125771782. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1980, 1984, 1991 and 1993.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Singapore Democratic Party”, its source revision and the description used here.
- Expand the search: follow Singapore Democratic Party primary sources, Singapore Democratic Party archive and Singapore research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Singapore Democratic Party”?
- Which institution is responsible for the underlying evidence?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Singapore Democratic Party” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.