| Election Name: | 1866 Maine gubernatorial election |
| Image1: | File:Chamberlain_as_Governor_of_Maine.jpg |
| Before Election: | Samuel Cony |
| Governor | |
| Percentage2: | 37.59% |
| Popular Vote2: | 41,942 |
| Party2: | Democratic Party (United States) |
| Nominee2: | Eben F. Pillsbury |
| Popular Vote1: | 69,636 |
| Country: | Maine |
| Percentage1: | 62.41% |
| Party1: | Republican Party (United States) |
| Nominee1: | Joshua Chamberlain |
| Map Size: | 300px |
| Election Date: | September 10, 1866 |
| Next Year: | 1867 |
| Next Election: | 1867 Maine gubernatorial election |
| Previous Year: | 1865 |
| Previous Election: | 1865 Maine gubernatorial election |
| Ongoing: | No |
| Type: | presidential |
| After Party: | Republican Party (United States) |
| After Election: | Joshua Chamberlain |
| Before Party: | Republican Party (United States) |
The 1866 Maine gubernatorial election was held on September 10, 1866. Republican candidate and war hero Joshua Chamberlain defeated the Democratic candidate Eben F. Pillsbury.[1]
During the American Civil War, Chamberlain played a crucial role at the Battle of Gettysburg.[3] This gave Chamberlain a war hero status.
The extremely popular Chamberlain was able to win election to a one-year term as governor. Chamberlain won a majority of 27,687 votes, trouncing his Democratic opponent.[4]