| Election Name: | 1865 Chicago mayoral election |
| Type: | presidential |
| Ongoing: | no |
| Election Date: | April 18, 1865 |
| Previous Year: | 1863 |
| Next Year: | 1867 |
| Image1: | File:JBrice (1).jpg |
| Nominee1: | John Blake Rice |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 11,078 |
| Percentage1: | 66.42% |
| Nominee2: | Francis Cornwall Sherman |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 5,600 |
| Percentage2: | 33.58% |
| Mayor | |
| Before Election: | Francis Cornwall Sherman |
| Before Party: | Democratic Party (United States) |
| After Election: | John Blake Rice |
| After Party: | Republican Party (United States) |
In the Chicago mayoral election of 1865, Republican John Blake Rice defeated Democratic incumbent Francis Cornwall Sherman by a landslide 33% margin of victory.
The election was held on April 18, only four days after the assassination of Abraham Lincoln.[1]
Originally, Democrat Leonard Rothgerber had been one of the candidates running. However, in the aftermath of the assassination of the Republican president, the shaken public had come to coalesce in support of Republican mayoral candidate Rice. Sensing this, Democratic candidate Leonard Rothgerber withdrew from the race and declared that there was a need for the nation to stand united.[2] As a gesture of gratitude, Rice reimbursed Rothgerber's campaign expenses.[3]
While he remained on the ballot, Sherman also all-but-withdrew from the race as well in the aftermath of Lincoln's assassination.[4]
Rice was a "Reform" Republican.[5]
This was the last of four mayoral elections that Chicago held during the course of the American Civil War.