Boldface (with superscript C) numbers indicate the majority Party in each house. Red (with superscript P) numbers (boldface or not) indicate the Party of the President in any event.
| President | Party | Congress | United States Senate | House of Representatives | |||||
|---|---|---|---|---|---|---|---|---|---|
| Republican | Federalist | other | vacancies | Republican | Federalist | other | |||
| Jefferson | Republican | 9th 1805-1807 | 27CP | 7 | |||||
9th CONGRESS- in General SENATE: 27 Republicans, 7 Federalists | |||||||||
Modified .