Firstly, he's an MP, its his job to know.

Secondly, he's a Tory, so he'll vote whatever way the Torys want him to (the same for Labour etc), not what his contituents want.

Anyway, Bin's LJ is hardly the place to have a discussion like this. The fact of the matter is that I will not participate in a system that I oppose, to do so would only encourage it to continue.