The DAP wants Datuk Seri Anwar Ibrahim to be the alternative prime minister and help transform Malaysia into becoming a healthy functioning democratic country.
Asked why Anwar, Lim, who is also Penang Chief Minister, told reporters that the former deputy prime minister was the common choice.
"He is widely accepted by everyone in the Opposition,” he said. "We hope he is allowed to take his rightful place in Parliament the soonest possible," said Lim.
Speaking at the one-day DAP national leadership convention, Lim urged party leaders and members not to rest on their laurels but must starting working as from now.
Lim said the DAP would continue to work with its allies in the Parti Keadilan Rakyat (PKR) and non-governmental organisations to complete the transformation.
The DAP, in its aim to be dynamic, would double its membership by adding another 100,000 members before the next general election.
"This is challenging but not impossible,” he said. "After all, was it not considered impossible for DAP to win power in Penang together with PKR?"
"But we cannot be complacent. Just as Malaysians voted for DAP in this elections, they can just as easily vote the party out should we fail to deliver," he said, reminding them of how the DAP won by a record number of state seats in Penang in 1990 but was punished in one of their worst electoral defeat within a single term in 1995.
Earlier, party national chairman Karpal Singh said he had confident that the party would be succeed in leading the Penang government.
"It is not easy to run a state government but we have the people who are much better than the Barisan Nasional in doing so," he said.