That is certainly a tricky question, judging by the reaction of our Honourable Members in the midst of the House of Parliament these days, where decisions pertaining to the running of the nation are taken.  The parliamentary debates around the highly controversial issue of legalizing abortion in specific cases were a real eye-opener about the roles of our MPs.
Are they meant to be representing the voice of their constituents or their own when voting for or against a Bill? Should their personal ethics cloud the wishes of their constituents, the people who believed in them and voted to have them sit in the great House of decision-making?
This seems to be the case when the truth is that some MPs are hanging on for dear life to their personal convictions when important decisions need to be taken.  Even leaders of political parties are playing the game safe by claiming that they are giving their member MPs the freedom of expression and choice of abiding to their principles, which leads us to the following question: Is the system not flawed somewhere?
I believe that when someone is elected to represent the voice of the voiceless, so be it.  Personal convictions should be kept in the closet and the veil of rationality be spread when important decisions are being taken.  Sitting on the fence is certainly not an option during highly sensitive discussions, which would change the archaic laws of abortion dating as far back in Mauritian history as 1838.  When people place their trust into someone’s hands, the least that person could do is to take into account their wishes and simply not be driven by personal dogmas or refusing to commit oneself.  If everyone were to behave in that way, imagine the ruckus.  So, MPs are entitled to their opinions but when they are called upon to decide on behalf of the nation, these should firmly be kept aside and the principle of the ‘majority rule’ should prevail, like a true democracy.  
After all, it should be the voice of the people, by the people and for the people.  This is called representing the voiceless.