[Gayle]

I suppose, and I'm only guessing here, that each ward Councillor will have roughly the same number of constituents so where there are two ward Councillors in one ward they'll have double the constituents. I'm also guessing that the reason they don't just divide the area into smaller areas is because they are roughly divided by towns or logical areas within towns.

What makes sense to me would be if a ward had two Councillors it would be beneficial to the ward to have one of each party. That way most of the people would be represented by one or the other of the two main parties on the Council.