| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,253 | 3,594 | 5,885 | |
| 2020 | R | 2,418 | 3,537 | 6,000 | |
| 2016 | R | 2,227 | 3,204 | 5,586 | |
| 2012 | R | 2,684 | 2,969 | 5,734 | |
| 2008 | R | 2,703 | 2,900 | 5,650 | |
| 2004 | R | 2,362 | 2,858 | 5,245 | |
| 2000 | R | 2,026 | 2,510 | 4,591 | |
| 1996 | R | 1,995 | 2,063 | 4,460 | |
| 1992 | R | 2,082 | 2,227 | 4,912 | |
| 1988 | R | 1,870 | 2,530 | 4,496 | |
| 1984 | R | 1,754 | 2,713 | 4,526 | |
| 1980 | R | 1,958 | 2,045 | 4,136 | |
| 1976 | R | 1,739 | 1,816 | 3,652 | |
| 1972 | R | 3,941 | 9,417 | 13,557 | |
| 1968 | R | 1,180 | 1,181 | 4,012 | |
| 1964 | D | 1,731 | 1,369 | 3,103 | |
| 1960 | D | 1,451 | 838 | 2,379 | |
| 1956 | D | 1,111 | 580 | 2,339 | |
| 1952 | D | 1,528 | 837 | 2,373 | |
| 1948 | D | 1,126 | 251 | 1,718 | |
| 1944 | D | 1,205 | 184 | 1,393 | |
| 1940 | D | 1,213 | 144 | 1,359 | |
| 1936 | D | 1,291 | 77 | 1,370 | |
| 1932 | D | 1,141 | 92 | 1,247 | |
| 1928 | D | 1,199 | 314 | 1,513 | |
| 1924 | D | 686 | 130 | 1,036 | |
| 1920 | D | 818 | 208 | 1,036 | |
| 1916 | D | 814 | 110 | 937 | |
| 1912 | D | 508 | 66 | 628 | |
| 1908 | D | 414 | 105 | 521 | |
| 1904 | D | 433 | 96 | 541 | |
| 1900 | D | 634 | 343 | 978 | |
| 1896 | D | 1,045 | 475 | 1,530 | |
| 1892 | D | 819 | 363 | 1,285 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Lunenburg sits in Virginia's Southside tobacco belt, where a shrinking but stable population has shifted steadily toward Republican presidential candidates over the past two decades, reaching a 22.8-point margin in 2024.
The shift began with civil rights. 1968 marked the realignment in Lunenburg County, by a zero points margin. The Republican margin reached its widest at forty points in 1972. The 2024 margin was twenty-three points.
The political shift has tracked, in Lunenburg County, the political shift of the South more broadly. A 58% non-Hispanic-white share, a median household income of $54,842, and a 16% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Huron County and Newaygo County.
