As an elective system, at-large voting is in contrast to bloc voting and general ticket voting.
| Congress | State & Number of at-large seats |
|---|---|
| 33rd | MS (2) |
| … | … |
| 38th | IL (1) |
| 39th | IL (1) |
| 40th | IL (1) |
| 41st | IL (1) |
| 42nd | IL (1) |
| 43rd | AL (2), AR (1), IN (2), LA (1), NY (1), PA (3), SC (1), TN (1), TX (2) |
| 44th | AL (2) |
| … | … |
| 48th | AR (1), CA (2), GA (1), KS (4), NY (1), NC (1), PA (1), VA (1) |
| 49th | PA (1) |
| 50th | PA (1) |
| … | … |
| 53rd | IL (2), KS (1), PA (2) |
| 54th | KS (1), PA (2) |
| 55th | KS (1), PA (2) |
| 56th | KS (1), PA (2) |
| 57th | KS (1), PA (2) |
| 58th | CO (1), CT (1), KS (1) |
| 59th | CO (1), CT (1), KS (1) |
| 60th | CO (1), CT (1) |
| 61st | CO (1), CT (1)) |
| 62nd | CO (1), CT (1) |
| 63rd | AL (1), CO (2), FL (1), IL (2), MI (1), MN (1), OH (1), OK (3), PA (4), TX (2), WA (2), WV (1) |
| 64th | AL (1), IL (2), PA (4), TX (2), WV (1) |
| 65th | IL (2), PA (4), TX (2) |
| 66th | IL (2), PA (4) |
| 67th | IL (2), PA (4) |
| 68th | IL (2) |
| 69th | IL (2) |
| 70th | IL (2) |
| 71st | IL (2) |
| 72nd | IL (2) |
| 73rd | CT (1), FL (1), IL (2), NY (2), OH (2), OK (1), TX (3) |
| 74th | CT (1), FL (1), IL (2), NY (2), OH (2), OK (1) |
| 75th | CT (1), IL (2), NY (2), OH (2), OK (1) |
| 76th | CT (1), IL (2), NY (2), OH (2), OK (1) |
| 77th | CT (1), IL (2), NY (2), OH (2), OK (1) |
| 78th | CT (1), FL (1), IL (2), NY (2), OH (1), PA (1) |
| 79th | CT (1), IL (2), OH (1) |
| 80th | CT (1), IL (2), OH (1) |
| 81st | CT (1), OH (1) |
| 82nd | CT (1), OH (1) |
| 83rd | CT (1), TX (1), WA (1) |
| 84th | CT (1), TX (1), WA (1) |
| 85th | CT (1), TX (1), WA (1) |
| 86th | CT (1) |
| 87th | CT (1) |
| 88th | CT (1), MD (1), MI (1), OH (1), TX (1) |
| 89th | MD (1), OH (1), TX (1) |