Again, I can only speak about what I've experienced through the assembly from my learning. With STV we felt that in, say, a five member riding, likely among those five, two or three different parties would be represented. More than likely at least one woman would be in the group. Believe it or not, in this day and age, in this century, there are still women who feel intimidated going to speak to a male in authority, so if they have a concern and their MP or MLA is a male, they will hesitate. Many of them don't even end up going with their concern because of that, but if there's a woman in a multi-member riding, they might take that concern to her regardless of which party she represents. Others won't go to you because that's not the party they voted for. They still have the concern but they have this feeling that they're not going to be taken seriously by you because that's not the party they voted for, so that's the other side.
Evidence of meeting #31 for Electoral Reform in the 42nd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was referendum.