| Answer | Crossword Clue |
|---|---|
| TOSSUP | Hard-to-predict outcome |
| TOSSUP | Difficult-to-predict outcome |
| UNIVAC | First computer to predict a U.S. election outcome |
| VOLATILE | Hard to predict |
| FLUKY | Hard to predict |
| XFACTOR | Its effect is hard to predict |
| HAIL | Weather forecast that's hard to predict? |
