Electing an MP is supposed to give a voice to the voters, not to the MP's Their votes are NOT supposed to be on the MP's religious beliefs, in fact it is not even supposed to be on their personal beliefs. They were elected to be the voters' voice. As far as abortion goes, it seems to me most people feel it should be left to the person who is undergoing the procedure and her doctor.
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Actually, the majority of Canadian voters want some control over late term abortion.
In fact, more women want an anti-abortion law than do men.
Below in this thread I quoted poll after poll after poll that demonstrates the truth of what I say above.
So, if MPs are to vote the wishes of the voters and ignore their own conscience, then we would have an abortion law.
BTW, you are wrong in that contention in the first place. An MP is supposed to vote his party's platform first (as he ran and was elected on those promises), and then his conscience.