GoodreadsLibrarythingnumberaveragenumberaverageRedshirts: A Novel with Three Codas, John Scalzi110003.827293.85Blackout, Mira Grant44534.202774.09Captain Vorpatril's Alliance, Lois McMaster Bujold21674.193484.17Throne of the Crescent Moon, Saladin Ahmed19073.612173.542312, Kim Stanley Robinson18593.412963.52
Well, there's a clear front-runner. Full nominations list is
here.