Was close here: right now Black turnout is at 1.375 million, 92% of general. Note that this includes modeled race for other/unknown race voters. Without doing this you will underestimate Black turnout, as @staceyabrams noted.
Merging general results, the voter file, and vote history data, it's clear drop-off among white Republicans drives the racial differences in #GASenateRunoff turnout I've identified throughout early voting. (1/x) #gapol
First, everyone needs to exit the coastal mindset re: white voters. In GA, there are only 44 precincts where whites are more than 80% of the voters and Perdue got less than 40% of the vote, for a grand total of about 85,000 white voters concentrated in DeKalb and Fulton. (2/x)
OTOH, 1.4 million white voters live in the 850 precincts that are >80% white and voted more than 60% for Perdue. These are the precincts I'll be watching tonight. (3/x)