What Does the Saying Refer to When the United States

What does the saying refer to when the United States is known as "election happy"?

A) The United States has more elections than any other democratic country in the world.
B) The elections in the United States are separate and independent from one another.
C) The United States has the most upbeat campaign processes of any other democratic country.
D) Regardless of the low participation rate, Americans are generally pleased with the outcomes of all of the elections in the United States.
E) Elections in the United States always elect one winner, thus the results are clearer than in other democratic countries.