The following tables indicate the historic party affiliation of elected officials in the U.S. state of Wyoming including:
The tables also indicate the historical party composition in the:
For years in which a United States presidential election was held, the tables indicate which party's nominees received the State's electoral votes. Prior to statehood in 1889, there were fewer elected offices, as indicated.
| Year | Executive offices | U.S. Congress | |
|---|---|---|---|
| Governor | Secretary of State | U.S. House (non-voting member) | |
| 1869 | John Allen Campbell (R) [a] | Edward Merwin Lee (R) | Stephen Friel Nuckolls (D) |
| 1870 | Herman Glafcke (R) | ||
| 1871 | William Theopilus Jones (R) | ||
| 1872 | |||
| 1873 | Jason B. Brown (D) | William Randolph Steele (D) | |
| 1874 | |||
| 1875 | John Milton Thayer (R) | George W. French (R) | |
| 1876 | |||
| 1877 | William Wellington Corlett (R) | ||
| 1878 | John Wesley Hoyt (R) | ||
| 1879 | Albertis Worth Spates (R) | Stephen Wheeler Downey (R) | |
| 1880 | Elliot S. N. Morgan (R) | ||
| 1881 | Morton Everel Post (D) | ||
| 1882 | William Hale (R) | ||
| 1883 | |||
| 1884 | |||
| 1885 | Elliot S. N. Morgan (R) | Joseph M. Carey (R) | |
| Francis E. Warren (R) | |||
| 1886 | George W. Baxter (D) | ||
| Elliot S. N. Morgan (R) | |||
| 1887 | Thomas Moonlight (D) | Samuel D. Shannon (D) | |
| 1888 | |||
| 1889 | Francis E. Warren (R) | John W. Meldrum (R) | |