
Most of the returns in the southern counties of Illinois were heavily in favor of the convention to create an amendment to the constitution.
| County | Percentage of voters in favor of the convention |
| Gallatin | 82% |
| Pope | 69 |
| Alexander | 60 |
| Jackson | 66 |
| Jefferson | 70 |
| Hamilton | 67 |
| Franklin | 60 |
| Mitchell's Map of Illinois, 1838 from Illinois in 1837; A Sketch Desciptive of the Situation, Bourndaries, Face of the Country, Prominent Districts, Prairies, Rivers, Minerals, Animals, Agricultural Products, Public Lands, Plans of Internal Improvement, Manufactures, &c. of the State of IllinoisFrom the collection of the Illinois State Historical Library |
In the northern and central counties of Illinois, the convention was decidedly voted down.
| County | Percentage of voters opposed to the convention |
| Pike | 90% |
| Fulton | 92 |
| Morgan | 91 |
| Sangamon | 83 |
| Clark | 79 |
| Edgar | 99 |
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