The number of registered voters in Shelby County changes every business day, as people register, or move out of the county.
Reports are run on the first business day of the month. There are separate reports for active voters and inactive voters, and the number of voters for each precinct split is shown. Current reports may be found using the links below.
Tennessee requires the Shelby County Election commission to run a report each six months listing the source of voter registration applications. This report also details the number of additions and cancellations for each precinct. Those reports can be accessed here.
Trent Cobb at the 2017 National Voter Registration Day Event.