Which is not considered as a type of actor?

Why is the national party/nomination convention important for democracy in the United States?

What will be an ideal response?

Duverger’s law explains

a. why plurality elections always lead to party systems with more than two major competitors. b. why office seekers will frequently pursue office as independents or third-party nominees. c. why in a system in which a single winner is chosen by plurality voting, serious competitors will be reduced to two. d. why the Electoral College is so frequently unable to choose the President.