5. Why do we have parties? What roles do they play in a representative democracy? How can these roles be beneficial? How

[answerhappygod]

5. Why do we have parties? What roles do they play in a
representative democracy? How can these roles be beneficial? How
can they be harmful? Why does the US have only two major political
parties? Make sure and describe the strategic behavior on the part
of voters, politicians, and parties that explains why we typically
only have two parties. Under what circumstances could we see a
third party have some success? Why?