It has always mystifyed me when politicians refer to "the grey vote" "the asian vote" "the black vote" the gay/pink vote" "the military vote" and so on. As if these sections of society can on their own affect the outcome of an election. If there was an MP specifically elected by these minority groups I could see the point. One thing that could be done fairly easily though, would be to have an "Armed Forces" MP elected by members of the services to look after their interests, and not have their vote dilluted in the general populations vote.