Preliminary results for Haddam, Higganum, and Haddam Neck are summed up as Haddam; then totals for Killingworth.
Governor
- Mark Boughton (R) Haddam 93 Killingworth 78
- Tim Herbst (R) Haddam 189 Killingworth 126
- Steve Obsitnik (R) Haddam 71 Killingworth 51
- Bob Stefanowski (R) Haddam 149 Killingworth 162
- David Stemerman (R) Haddam 94 Killingworth 67
- Ned Lamont (D) Haddam 572 Killingworth 394
- Joe Ganim (D) Haddam 77 Killingworth 41
Lt. Governor
- Susan Bysiewicz (D) Haddam 394 Killingworth 274
- Eva Bermudez Zimmerman (D) Haddam 248 Killingworth 158
- Joe Markley (R) Haddam 265 Killingworth 194
- Jayme Stevenson (R) Haddam 102 Killingworth 101
- Erin Stewart (R) Haddam 214 Killingworth 168
US Senator
- Matthew Corey (R) Haddam 419 Killingworth 321
- Dominic Rapini (R) Haddam 135 Killingworth 113
Treasurer
- Shawn Wooden (D) Haddam 329 Killingworth 267
- Dita Bhargava (D) Haddam 300 Killingworth 157
- Thad Gray (R) Haddam 121 Killingworth 148
- Art Linares (R) Haddam 461 Killingworth 301
Comptroller
- Kurt Miller (R) Haddam 275 Killingworth 220
- Mark Greenberg (R) Haddam 286 Killingworth 215
Attorney General
- William Tong (D) Haddam 387 Killingworth 281
- Paul Doyle (D) Haddam 90 Killingworth 35
- Chris Mattei (D) Haddam 158 Killingworth 111
- Sue Hatfield (R) Haddam 455 Killingworth 357
- John Shaban (R) Haddam 113 Killingworth 90