| Goodreads | Librarything | |||
| number | average | number | average | |
| Redshirts: A Novel with Three Codas, John Scalzi | 11000 | 3.82 | 729 | 3.85 |
| Blackout, Mira Grant | 4453 | 4.20 | 277 | 4.09 |
| Captain Vorpatril's Alliance, Lois McMaster Bujold | 2167 | 4.19 | 348 | 4.17 |
| Throne of the Crescent Moon, Saladin Ahmed | 1907 | 3.61 | 217 | 3.54 |
| 2312, Kim Stanley Robinson | 1859 | 3.41 | 296 | 3.52 |
Well, there's a clear front-runner. Full nominations list is here.