| Dem | |
| Rep | |
| Una | |
| Oth | |
| Total | 0 |
| Margin |
| Year | Election | Registered Voters | Ballots Cast | Turnout | Dem Votes | Dem Votes % | Rep Votes | Rep Votes % | Dem Candidate | Rep Candidate | Margin | Margin % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | 106,464 | 61,059 | 57.35 % | 27,657 | 45.30 % | 32,678 | 53.52 % | 5,021 | 8.22% | |||
| 2020 | 98,982 | 85,107 | 85.98 % | 36,815 | 43.26 % | 46,443 | 54.57 % | 9,628 | 11.31% | |||
| 2018 | 98,598 | 64,285 | 65.20 % | 28,047 | 43.63 % | 34,017 | 52.92 % | 5,970 | 9.29% | |||
| 2016 | 96,356 | 72,709 | 75.46 % | 23,614 | 32.48 % | 40,529 | 55.74 % | 16,915 | 23.26% | |||
| 2014 | 91,219 | 38,330 | 42.02 % | 12,707 | 33.15 % | 23,016 | 60.05 % | 10,309 | 26.90% | |||
| 2012 | 90,699 | 66,953 | 73.82 % | 20,044 | 29.94 % | 39,445 | 58.91 % | 19,401 | 28.97% |
| Muni | Registered Voters | Ballot Cast | Dem Votes | Rep Votes | ||
|---|---|---|---|---|---|---|
| Alexandria Township | 4,160 | 2,330 | 885 | 1,424 | ||
| Bethlehem Township | 3,370 | 1,959 | 801 | 1,138 | ||
| Bloomsbury Borough | 716 | 373 | 174 | 194 | ||
| Califon Borough | 919 | 550 | 301 | 246 | ||
| Clinton Town | 2,277 | 1,339 | 713 | 607 | ||
| Clinton Township | 10,863 | 6,148 | 2,783 | 3,309 | ||
| Delaware Township | 4,128 | 2,601 | 1,279 | 1,289 | ||
| East Amwell Township | 3,382 | 2,163 | 1,008 | 1,125 | ||
| Flemington Borough | 2,519 | 1,318 | 719 | 575 | ||
| Franklin Township | 2,737 | 1,650 | 620 | 1,010 | ||
| Frenchtown Borough | 1,209 | 678 | 442 | 226 | ||
| Glen Gardner Borough | 1,356 | 666 | 301 | 360 | ||
| Hampton Borough | 1,082 | 512 | 215 | 289 | ||
| High Bridge Borough | 2,894 | 1,684 | 860 | 796 | ||
| Holland Township | 4,416 | 2,537 | 942 | 1,555 | ||
| Kingwood Township | 3,191 | 1,871 | 680 | 1,171 | ||
| Lambertville City | 3,549 | 2,220 | 1,767 | 438 | ||
| Lebanon Borough | 1,381 | 732 | 294 | 429 | ||
| Lebanon Township | 5,267 | 3,087 | 1,157 | 1,887 | ||
| Milford Borough | 970 | 522 | 251 | 262 | ||
| Raritan Township | 19,889 | 10,952 | 5,043 | 5,762 | ||
| Readington Township | 13,936 | 8,034 | 3,257 | 4,692 | ||
| Stockton Borough | 449 | 282 | 185 | 91 | ||
| Tewksbury Township | 5,433 | 3,202 | 1,359 | 1,807 | ||
| Union Township | 3,859 | 2,164 | 931 | 1,215 | ||
| West Amwell Township | 2,512 | 1,485 | 690 | 781 |
| Municipality | Citizens 18+ | Reg Dem | Reg Rep | Reg Una | Tot Reg Voters | Tot Reg Voters % |
|---|