| Value | Category |
|---|---|
| -1 | Missing |
| 1 | You were registered to vote |
| 2 | You did not want to register |
| 3 | You could not find a place to register |
| 4 | You were prevented from registering |
| 5 | You were too young to register |
| 6 | Did not register for some other reason |
| 9 | Don't know/Can't remember |
| 998 | Refused |