Comparison of Voting Age Population to Registered Voters in the 40 Largest U.S. Counties

GAO-01-560R March 23, 2001
Full Report (PDF, 3 pages)  

Summary

This report compares data on the number of registered voters for the 40 largest counties in the United States with estimates of voting age populations for those jurisdictions. GAO found that none of the counties have voter registration numbers that exceed the number of eligible voting age residents.