Speaking at a dialogue session in London, PM Lee said that Singaporeans are the ones who will decide who they want in power.
He said that this decision will depend on how well the PAP continues to run the government and whether it is able to build on past successes.
He was responding to a comment by former British secretary of defence and transport, Malcom Rifikind who pointed out that the PAP lost a lot of votes in the last General Election with almost 40% voting for opposition.
Based on this, Rifikind had commented that it may not be long before the PAP was voted out.
In response, PM Lee had said that politics is more complex than that and it wasn't possible to simply draw a linear pattern to predict the future.
He emphasised that in the end, the people will decide who they want to run the country.