What is the N for the following frequency distribution? 
Definitions:
Lloyd Bentsen
An American politician who served as a United States Senator from Texas and was the Democratic Party's nominee for Vice President in 1988.
Michael Dukakis
An American politician who served as the Governor of Massachusetts and was the Democratic presidential nominee in 1988.
Americans with Disabilities Act
A civil rights law that prohibits discrimination against individuals with disabilities in all areas of public life, including jobs, schools, transportation, and all public and private places that are open to the general public.
Civil Rights Reforms
Legislative and societal changes aimed at eliminating racial discrimination and advancing equal rights for all citizens, particularly those concerning voting rights, education, and employment.
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