| Names on Checklist | |||||
| Republican | Democratic | Undeclared | New Reg. | Totals | |
| 11/3/98 | |||||
| Belknap County | 15,071 | 7,707 | 12,196 | 630 | 3,5,604 |
| Carroll County | 13,516 | 5,136 | 12,598 | 518 | 31,768 |
| Cheshire County | 14,638 | 12,958 | 17,457 | 1,118 | 46,171 |
| Coos County | 6,591 | 6,480 | 7,175 | 280 | 20,526 |
| Grafton County | 19,215 | 12,026 | 20,310 | 1,007 | 52,558 |
| Hillsborough County | 79,023 | 63,245 | 67,897 | 5,248 | 215,413 |
| Merrimack County | 31,223 | 21,720 | 29,436 | 2,805 | 85,184 |
| Rockingham County | 64,025 | 45,854 | 71,873 | 2,700 | 184,452 |
| Strafford County | 20,204 | 21,174 | 24,170 | 1,511 | 67,059 |
| Sullivan County | 8,711 | 6,957 | 9,022 | 420 | 25,110 |
| Totals | 272,217 | 203,257 | 272,134 | 16,237 | 763,845 |
|Belknap County | Carroll County | Cheshire County | Coos County | Grafton County | Hillsborough County | Merrimack County | Rockingham County | Strafford County | Sullivan County |