Alexander, Lloyd 22
Cook, Glen 7
Jemisin, N.K. 15
LeGuin, Ursula 21
McKillip, Patricia 12
Pratchett, Terry 16
Wolfe, Gene 15
A lot of people's favourites must have just dropped off, as there hasn't been a vote for about 13 hours. Mine are all gone, I'm just voting now to get this one done.
Edit: two votes within a minute after that 13-hour gap; corrected above for cross-vote.