This technique was in widespread use until 1948, when the major national polls based on this technique all predicted that Republican Thomas E. Dewey would defeat incumbent Democrat Harry S. Truman.
The polls suggested that Dewey would beat Truman.
H-2A workers by definition are required to leave the United States within a year, and the record establishes that most H-2A workers are physically present in the United States for only two to five months.