This is from WSOCTV.com:

Eyewitness News learned there was a record turnout in early voting in Mecklenburg County. Typically less than 1 percent of voters cast ballots in early voting, but in this primary it was 8 percent. The statistics show 85 percent of those people voted Democrat, even thought only 44 percent of voters in the county are registered Democrats.

…

(election officials) expect 40 percent voter turnout in Tuesday’s primary, which is considered to be extraordinary for a primary.