| DIST. | COUNTIES. | NAMES OF MEMBERS. |
| 20 | Johnson and Jones | William Penn Clarke. |
| 21 | Scott | George W. Ells. |
| 22 | Cedar | Robert Gower. |
| 23 | Clinton | Aylett R. Cotton. |
| 24 | Linn | Hosea W. Gray. |
| 25 | Linn, Benton, Black Hawk and Buchanan | James C. Traer. |
| 26 | Poweshiek, Jasper, Marshall and Tama | Harvey J. Skiff. |
| 27 | Polk, Dallas and Guthrie | Thomas Seely. |
| 28 | Jackson | William A. Warren. |
| 29 | Jackson and Jones | Albert H. Marvin. |
| 30 | Dubuque | John H. Emerson. |
| 31 | Dubuque and Delaware | John H. Peters. |
| 32 | Clayton | Alpheus Scott. |
| 33 | Fayette, Bremer, Butler, Franklin, Grundy, Hardin, Wright, Webster, Boone, Story, Greene, Allamakee, Winneshiek and Humboldt | Sheldon G. Winchester. |
| 34 | Howard, Chickasaw, Mitchell, Floyd, Worth, Cerro Gordo, Hancock, Winnebago, Bancroft and Kossuth | John T. Clark. |
Democrats, 15; Republicans, 21.
The constitution framed by this convention was adopted by a vote of the electors on the 3d of August, 1857, and took effect September 3, 1857.
The Convention adjourned March 5, 1857.
SEVENTH GENERAL ASSEMBLY.
(First under the Constitution of 1857.)
Convened at Des Moines, January 11, 1858.
The Senate.
Lieutenant-Governor Oran Faville, President, Republican.
George E. Spencer, Secretary, Republican.
| DIST. | COUNTIES. | NAMES OF MEMBERS. |
| 1 | Lee | John R. Allen, John W. Rankin. |
| 2 | Lee and Van Buren | David T. Brigham. |
| 3 | Van Buren | Gideon S. Bailey. |
| 4 | Des Moines | William F. Coolbaugh, Lyman Cook. |
| 5 | Davis | Henry H. Trimble. |
| 6 | Jefferson | William M. Reed. |
| 7 | Henry | Alvin Saunders. |
| 8 | Wapello | John A. Johnson. |
| 9 | Monroe, Lucas and Clarke | Dan. Anderson. |
| 10 | Appanoose, Wayne, Decatur | John W. Warner. |
| 11 | Fremont, Mills, Page, Taylor, Montgomery, Ringgold, Union and Adams | Samuel Dale. |
| 12 | Pottawattamie, Harrison, Shelby, Woodbury, Monona, Audubon, Crawford, Calhoun, Sac, Ida, Cherokee, Buena Vista, Pocahontas, Palo Alto, Emmet, Clay, Dickinson, Osceola, O’Brien, Plymouth, Sioux, and Buncombe | W. H. M. Pusey. |
| 13 | Louisa | Samuel Reiner. |
| 14 | Washington | Charles Foster. |
| 15 | Keokuk | O. P. Sharradan. |
| 16 | Mahaska | William Loughridge. |
| 17 | Marion | Jairus E. Neal. |
| 18 | Warren, Madison, Adair, Cass | M. L. McPherson. |
| 19 | Muscatine | A. O. Patterson. |
