Member of Parliament

Lim first emerged as a politician when he was National Organising Secretary of the DAP from 1966 to 1969. At the same time, he was also entrusted to edit the party's newspaper, the Rocket. The course of the political landscape changed when he was promoted to Secretary-General in 1969 after being acting Secretary-General for a short stint during a period.

Lim was first elected as an MP for the Bandar Melaka seat in 1969. His election was initially held to be void, however, because of the ineligibility of an election agent who had previously failed to discharge his duties from standing for election in the future. The Prime Minister of Malaysia, Tun Abdul Razak, moved a motion in Parliament to prevent Lim from serving as an MP, granting him instead a period of time to request a royal pardon from the Yang di-Pertuan Agong (King). After receiving the royal pardon, Lim was allowed to retain his seat.^[6]

Apart from 1999 to 2004, during which time he lost his seat due to the Chinese disenchantment with DAP entering into a political pact with the Islamist PAS for the general elections, Lim represented various constituencies in five states:

• Bandar Melaka, Melaka (1969–1974)
• Kota Melaka, Melaka (1974–1978)
• Petaling, Selangor (1978–1982)
• Kota Melaka, Melaka (1982–1986)
• Tanjong, Penang (1986–1999)
• Ipoh Timor, Perak (2004–2013)
• Gelang Patah, Johor (2013-2018)
• Iskandar Puteri, Johor (2018-2022)

He also served as a state assemblyman in Melaka and Penang during the following periods: Kubu, Melaka (1974–1982); Kampong Kolam, Penang (1986–1990); and Padang Kota, Penang (1990–1995).

In addition, Lim had also served as the Opposition Leader of Malaysia three times over a span of 50 years. He was first elected Opposition Leader for an 18-month stint from January 1973 to July 1974. Next, he assumed the position in November 1975 for the next 24 years before losing his parliamentary seat in the 1999 general elections. He served in the post once more for a four-year stint following the 2004 general elections until 2008.

He led the party as Secretary-General until 1999 when he was elected party chairman, succeeding Chen Man Hin. In 2004, he refused re-appointment as the chairman and Karpal Singh was elected to replace him. Lim was then elected to an advisory role as the leader of a newly created body called the "Policy and Strategic Planning Commission". His son, Lim Guan Eng, was the Secretary-General of the party and the Finance Minister of Malaysia.

After winning a parliamentary seat from Ipoh Timor during the 2004 general election, which also saw his party clinching the most seats of any opposition party, Lim became the Parliamentary Opposition Leader.

Lim contested and won in Gelang Patah against Barisan Nasional's heavyweight and former Menteri Besar of Johor Abdul Ghani Othman in the 2013 general election.

On 22 October 2015, Lim was suspended for six months from Parliament for insulting Dewan Rakyat Speaker Pandikar Amin Mulia.^[7][8] Earlier, he had stated that Pandikar was abusing his powers by ruling that the Parliament's Public Accounts Committee (PAC) could not continue its ongoing investigation into 1Malaysia Development Berhad scandal (1MDB) due to the transfer of four PAC members to the Cabinet. Pandikar had insisted that Lim apologize and withdraw his statement against him.^[9] However, Lim did not apologise or retract his remarks.^[10]

Retirement

On 20 March 2022, on the 17th DAP National Congress, Lim announced his retirement and that he will not be contesting in the Central Executive Committee and the following general and state elections, citing old age.^[11] The Secretary-general of DAP, Anthony Loke had originally intended to appoint him as the mentor of the party.^[12] However, Lim declined the offer.^[13]

Honours of Malaysia

•  Malaysia :
  • Commander of the Order of Loyalty to the Crown of Malaysia (PSM) – Tan Sri (2023)^[18]