Examples of use of over-represent
1. "They tend to over–represent the top social classes and under–represent poorer and rural voters.
2. This "spoils mentality" is too often reinforced by electoral systems that favor legislative candidacy via party slate and over–represent rural areas –– politicians owe too much allegiance to the party structure and not enough to constituents; entrenched anti–reform opponents are granted too large a voice in policy–making.