Why do political scientists consider multi-party systems the most representative of all the systems?
I think that one reason why political scientists could consider multi- party system more representative is because individual political interests have a stronger sense of advocacy. Multi- party systems are able to reach out and advocate for individual interests in a much more specific and narrow manner. Individuals can find their own "voice" in a multi- party system. Within the realm of multiple parties, individuals are able to find greater chance of having their interests represented, their own experiences validated, and ensuring that they can find a political party who is advocating their own agenda. The multi- party system speaks to all narratives of the body politic. The theory in a multi- party system is that the electorate is a diverse group of people. They are not monolithic. The emergence of a multi- party system represents such diversity. Instead of a two party system where choice is fundamentally limited, a multi- party system can be seen as more representative because of voicing the concerns of a diverse electorate and body politic.