The Themes, Issues, and Messages That Candidates Present During a Campaign

The themes, issues, and messages that candidates present during a campaign are generally based on

A) the election rules passed by Congress each year.
B) the size of the constituency they are seeking to represent.
C) polls and focus groups.
D) legally binding orders that are issued from the national party organizations.
E) an objective assessment of what the most important problems facing the country are.