Almost forgot about this, here are the issues I found:
National Solidarity Party links to a disambiguation page; have it link to the right article.
"of the Constitution of the Republic of Singapore[2]" period after Singapore
"(Registration with the police is no longer required.)" This is already noted in the lead and feels out of plate so early in the article. Move it to a later mention (it's in the next section anyway), or just remove the sentence since the parentheses bring the flow to a halt.
"On the same day, the Public Order (Unrestricted Area) Order 2009 " So is it called the Public Order Order? That's a bit confusing, and the addition of various ways to say the bills actually makes it harder to follow; try simplifying them a bit if you can.
There's a citation needed tag that needs to be remedied.
"However, several unofficial sites have sprung up to fill this void." examples/citation?

There's not too much to fix. I'll put the article on hold for five days and will pass it when the issues are fixed.