| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 13,110 | 10,409 | 24,003 | |
| 2020 | D | 12,684 | 10,256 | 23,857 | |
| 2016 | D | 10,241 | 9,727 | 21,503 | |
| 2012 | D | 11,315 | 8,899 | 20,757 | |
| 2008 | D | 11,886 | 9,287 | 21,584 | |
| 2004 | D | 11,351 | 10,370 | 22,142 | |
| 2000 | R | 8,634 | 9,457 | 19,671 | |
| 1996 | D | 8,130 | 6,372 | 18,173 | |
| 1992 | D | 6,714 | 6,405 | 19,036 | |
| 1988 | R | 5,939 | 9,837 | 15,920 | |
| 1984 | R | 4,869 | 10,312 | 15,236 | |
| 1980 | R | 4,776 | 7,434 | 14,259 | |
| 1976 | R | 4,818 | 7,554 | 12,797 | |
| 1972 | R | 2,903 | 7,580 | 10,487 | |
| 1968 | R | 3,380 | 5,659 | 9,261 | |
| 1964 | D | 5,099 | 3,984 | 9,094 | |
| 1960 | R | 2,337 | 7,562 | 9,899 | |
| 1956 | R | 1,164 | 7,191 | 8,355 | |
| 1952 | R | 1,299 | 6,766 | 8,074 | |
| 1948 | R | 1,095 | 4,743 | 5,894 | |
| 1944 | R | 2,102 | 4,919 | 7,030 | |
| 1940 | R | 2,415 | 5,244 | 7,664 | |
| 1936 | R | 1,850 | 5,252 | 7,232 | |
| 1932 | R | 2,602 | 4,666 | 7,309 | |
| 1928 | R | 1,181 | 4,470 | 5,669 | |
| 1924 | R | 878 | 3,311 | 4,280 | |
| 1920 | R | 1,256 | 3,668 | 4,983 | |
| 1916 | R | 1,718 | 1,781 | 3,564 | |
| 1912 | D | 1,633 | 457 | 3,721 | |
| 1908 | R | 1,196 | 1,693 | 3,000 | |
| 1904 | R | 1,065 | 1,794 | 2,963 | |
| 1900 | R | 1,419 | 2,212 | 3,688 | |
| 1896 | R | 1,211 | 2,596 | 3,906 | |
| 1892 | R | 1,585 | 2,018 | 3,776 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Lincoln County hugs Midcoast Maine's peninsula-studded shoreline, drawing seasonal residents and retirees who have tilted the electorate consistently toward Democratic presidential candidates by double-digit margins across recent cycles.
The county's recent history is a story of close margins. The Democratic margin reached thirty-two points in 1912; the Republican margin reached seventy-two points in 1956. Most other elections have been decided by single-digit points.
Lincoln County's demographics — a population of 36,099, a 94% non-Hispanic-white share, a median household income of $76,875 — situate the county close to national averages on several dimensions. The county's voting pattern over the last decade is most similar to that of Merrimack County and Caledonia County.