It would be interesting to look at the demographics of renters and their involvement in municipal politics. I am assuming there are a large percentage of young renters without children that are fairly mobile and don't concern themselves with local politics because they don't see themselves staying in that location for a long time. Once people start to think about raising a family then local politics start to play an important role because they begin to settle down in one area and become less mobile. They may remain renters or purchase a home, and they move from house to house, but do they remain within the same municipality for longer periods of time?