1840 Senate Elections
Table of returns — 26 states
| State | Winner | Margin |
|---|---|---|
| South Carolina | Liberal (Liberal) | 14.1% |
| Georgia | Liberal (Liberal) | 16.7% |
| Alabama | Liberal (Liberal) | 29.0% |
| Mississippi | Liberal (Liberal) | 33.9% |
| Orleans | Liberal (Liberal) | 15.2% |
| North Carolina | National (National) | 6.5% |
| Arkansas | Liberal (Liberal) | 32.2% |
| Tennessee | Liberal (Liberal) | 16.0% |
| Virginia | Liberal (Liberal) | 1.6% |
| Kentucky | Liberal (Liberal) | 5.6% |
| Maryland | National (National) | 17.6% |
| Delaware | National (National) | 30.3% |
| Pennsylvania | National (National) | 5.1% |
| New Jersey | National (National) | 22.8% |
| Ohio | National (National) | 22.6% |
| New York | Liberal (Liberal) | 26.6% |
| Connecticut | National (National) | 29.9% |
| Massachusetts | National (National) | 44.6% |
| Rhode Island | National (National) | 36.2% |
| New Hampshire | National (National) | 29.8% |
| Vermont | National (National) | 36.3% |
| Maine | National (National) | 3.7% |
| Miami | Liberal (Liberal) | 4.3% |
| Illinois | Liberal (Liberal) | 5.1% |
| Michigan | Liberal (Liberal) | 7.5% |
| Missouri | Liberal (Liberal) | 31.7% |