| Election Name: | 1863 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1862 New Hampshire gubernatorial election |
| Previous Year: | 1862 |
| Next Election: | 1864 New Hampshire gubernatorial election |
| Next Year: | 1864 |
| Election Date: | March 10, 1863 |
| Nominee1: | Joseph A. Gilmore |
| Party1: | Republican Party (United States) |
| Electoral Vote1: | 192 |
| Popular Vote1: | 29,035 |
| Percentage1: | 43.63% |
| Nominee2: | Ira Allen Eastman |
| Party2: | Democratic Party (United States) |
| Electoral Vote2: | 133 |
| Popular Vote2: | 32,833 |
| Percentage2: | 49.34% |
| Nominee3: | Walter Harriman |
| Party3: | Independent Democrat |
| Electoral Vote3: | 1 |
| Popular Vote3: | 4,372 |
| Percentage3: | 6.57% |
| Map Size: | 245px |
| Governor | |
| Before Election: | Nathaniel S. Berry |
| Before Party: | Republican Party (United States) |
| After Election: | Joseph A. Gilmore |
| After Party: | Republican Party (United States) |
The 1863 New Hampshire gubernatorial election was held on March 10, 1863.[1]
Incumbent Republican Governor Nathaniel S. Berry did not stand for re-election.
Republican nominee Joseph A. Gilmore defeated Democratic nominee Ira Allen Eastman and Union Democrat Walter Harriman.
Since no candidate received a majority in the popular vote, Gilmore was elected by the New Hampshire General Court per the state constitution.
As no candidate received a majority of the vote, the New Hampshire General Court was required to decide the election, both Houses in convention choosing among the top two vote-getters, Eastman and Gilmore. The legislative election was held on June 4, 1863.[7]