Political polls typically sample randomly from the U.S Population to investigate the percentage of voters who favor some candidate or issue. Suppose that one such poll asks voters how they feel about the president's handling of foreign affairs. How large a sample must the pollster take to ensure that, with 95% confidence, he or she could estimate the fraction of voters who "approve" or "strongly approve" of the President's handling of foreign affairs within 2% of the actual value? Place your answer, rounded to the nearest whole number.