What is the difference between a legislature called a “parliament” and one called a “congress”? In a pure proportional representation system, what does an individual citizen vote for, and how are legislative seats allocated? Offer main advantages and disadvantages of proportional representation (as opposed to district-based elections) from the perspective of the quality or nature of representation. How does the single-member district system work? What are advantages and disadvantages of the system? Explain. In general, electoral systems and party systems are related. How are they related? Which shapes the other more and why?