The PAP is still going pretty strong, although they did receive their lowest vote share (about 60%) at the General Election last year. They still have 81 out of 87 seats in Parliament, though, so I doubt they're going anywhere soon. But they are getting the signal that there needs to be some change, or they're going to have trouble in future elections.

It is crowded in Singapore – the last I heard the population is over 5 million now.