Question

According to political scientists, the passage of voter registration requirements in the early nineteenth century reduced voter turnout by as much as ________ percent

Answer 1

According to political scientists, the passage of voter registration requirements in the early nineteenth century reduced voter turnout by as much as fifty (50) percent.
One theory of why voter turn out started to decline in the early 1900's is that the legal barriers to participation, such as complex registration procedures, started to increase.