Just over 1 000 000 votes were cast in the Tshwane Metro in total.
IN the 2006 election there was a voter turnout of just over 40%, about 900k votes received out of 4 million valid votes (2x 2 million inhabitants). I won't expect many more than 900k votes this time round, and Pretoria is already over 300k. So probably two thirds to go.