Speaking for myself as a voter, if the opposition presented a coherent plan that will bring forth 49% of the seats to them, then a case can be argued that a vote for the opposition is a vote for the citizens.
When SBF first started, I held the exact same views. Many in this forums convinced me otherwise.
The PAP will not allow opposition to have a set of coherent views and that tactic has reaped fantastic results over the years. This is how they have done it;
1) Co-opting individuals with alternative views before they crystalise into an opposition or be attracted to the opposition. Here are 2 famous individuals - Ho Kwon Ping and Tharman. Both got hauled by ISD. Tharman even met with Tan Wah Piow and crowd for weekly meetings in London. Lets not forget James Fu, Jek Yuen Tong and company from the 1st generation. There are whole string of others.
2) Making it near impossible for those with politically alternative views to survive in corporate life as 65% of the economy is held by GLC and the like. Unless you don't have a family , its a hard sell. Ask Chee.
3) The media is completely controlled by the PAP. Even Singaporeans seeing TV broadcasts and reading the press have little idea what the opposition does in parliament. We did not even know about Lim Hwee Hua and 41% until GMS told us.
4) You require $13K just to be nominated and lets not forget other campaign expenses. I am sure its the highest amount in the world. There are also pre-requisites never seen in any other democracy, not even close such as GRC, suitability certificate etc.
5) Talk to the Election agents for opposition parties and find out how they need to queue up for rally sites, plus a host of other obstacles.
6) Lastly, all JBJ did was to flash a copy of the police report lodged by Tan Liang Hong at a campaignn rally and they finally bankrupted him. That alone was a huge deterrent. What are you going to say in a Rally if you are screwed in this manner.
In essence , the potential oppposition candidate pool is rather small, not very talented but very brave.
You might want to climb Mt Everest, which will be so much easier than looking for any semblence of coherence.
As one well regarded forummer put it - vote anyone including a bicycle thief to reduce PAP seats and get their attention.