Too legit to quit
Like a blockbuster film, Singapore's elections are often a colourful spectacle with an all too predictable ending - much like the Chinese war film Red Cliff, parodied in this movie poster by designer PixelGod
The PAP has long enjoyed widespread support and political legitimacy, especially among older Singaporeans who have seen the country swiftly develop into a first-world economy.
Pragmatic voters have been willing to trade in some freedoms in exchange for prosperity and stability. The country's massive jubilee celebration last month reminded Singaporeans how far the country has come - and may have helped to shore up voter goodwill for the PAP.
But younger Singaporeans have also been calling for greater government accountability, particularly with recent stumbles over immigration and infrastructure.
The PAP has tried to address these problems, but that has not quelled the demand for more opposition representation.
Lee legacy
The PAP is synonymous with its charismatic and deeply respected leader Lee Kuan Yew, whose presence looms large over this election, the first to be held since his death in March.
He led the country as prime minister from independence in 1965 to 1990 and his personal popularity helped to ensure the party's non-stop electoral success.
His death in March triggered an outpouring of grief and tributes, which may contribute to greater PAP support this election.
Lee was also known for his merciless attitude towards opponents with defamation suits, which critics say created a culture of fear and stifled dissent.
This election is the first to see all constituencies contested, as more opposition candidates step forward into the political spotlight.
These include Chee Soon Juan, who was bankrupted by Lee's suits and is staging a comeback this election.