If you mean the filter: most of the support is from Conservative voters, especially the older voters and parents. Labour and the Conservatives support it, I think many Lib Dems oppose it.
A few years ago I would have said the same thing - "If they did this here, Brits would go mad!" - I think everyone wants to believe that about their country, but when it comes to it people are surprisingly accepting.
Also, it's worth noting this article is wrong: no government filter in the UK is in place yet, this was an ISP's own filter.
I think the spread of support is less clear. I vaguely recall some survey a few months back that posed a carefully-phrased question along the lines of "ISPs should do more to control what children see online (agree/ disagree)" and the support from Guardian readers was clearly in favour (can't rememeber the percentage).
There's a split in the Conservative party about infantilising adults - you just have to read ConservativeHome to see that. I would go as far to say that a majority of activists dislike what Cameron is being seen to do with the ISPs.
I feel he's dangerous because he doesn't espouse an ideology. He doesn't offer a sense of where he wants to take the country - just wherever the newspaper headlines will take him. It might most kindly be described as a misguided sense of noblesse oblige.
A few years ago I would have said the same thing - "If they did this here, Brits would go mad!" - I think everyone wants to believe that about their country, but when it comes to it people are surprisingly accepting.
Also, it's worth noting this article is wrong: no government filter in the UK is in place yet, this was an ISP's own filter.