Or are you suggesting the elections are marred by fraud? It has to be one of these two.
But it's also possible that no viable oppositions are allowed to organize effectively enough to compete fairly.
My personal yardstick for judging a healthy and mature democracy is counting how many times political power has changed hands without violence -- Singapore is yet to score after 60 years.
The odds are stacked against the opposition — for some reason, elected Members of Parliament are required to manage their individual town councils as well. The opposition that won a group constituency recently got a lawsuit slapped against them for "mismanagement" [1].
[1] https://www.reddit.com/r/singapore/comments/dgbe25/ahtc_case...
Adding on: this is because the PAP in Singapore controls more than two-thirds of parliament [1], and have been able to push through constitutional changes without much consultation [2].
I think the increase in the private-sector requirement for candidates of our presidency (overtly disqualifying Tan Cheng Bock, a former PAP MP who was a candidate for the presidential elections, and is now the leader of an opposition party) slipped past many of our political critics until it was too late; a lot of uproar was focused on the elections being reserved for people from a specific ethnic group [3].
[1] https://en.wikipedia.org/wiki/13th_Parliament_of_Singapore
[2] https://en.wikipedia.org/wiki/Constitution_of_Singapore#Amen...
[3] https://en.wikipedia.org/wiki/Presidential_elections_in_Sing...
Surely there is enough highly talented, smart people to have a crack at a political office that's been held for decades and of course an enthusiastic young generation who have lived under this system perhaps interested in a change? It's a country with one of the highest average IQ's on Earth and I'm always intrigued by the statement "no viable opposition". There's definitely a viable everything else in the nation, wondering why politics is so different. It's an amazing place to live from my Australian perspective.
I'd argue that everyone couldn't care less given the history and are fine with the system as exists. Which seems to backed up by a lot of elections.
Not all political candidates seek power, money, or status.
Some might just want parliament to be more diverse than one party making up more than two-thirds of it, and having the power to push through constitutional changes any time they want.
Aspiring politicians who join the PAP hoping to steer it from within probably haven't thought about how they're subject to the party whip [1], and how nobody has disobeyed the whip since Tan Cheng Bock.
[1] https://www.todayonline.com/singapore/explainer-what-does-wh...
[2] https://en.wikipedia.org/wiki/Tan_Cheng_Bock#Nominated_Membe...
What would you consider "actual contribution to the society"? Any chance you could give examples of some things you would like to see opposition candidates do?
Is that by design?
What makes "young talents" suitable for good governance?