What Is the Primary Role of a Party as an Organization

What is the primary role of a party as an organization?

A) organize the efforts of elected officials to achieve policy goals
B) design governmental institutions in order to maximize efficiency in the development of public policy
C) select candidates to seek public office and to assist candidates in organizing election campaigns
D) develop coherent policy platforms to support the party's electoral efforts
E) coordinate the actions of ordinary citizens to support the party's candidates for office