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 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Democrat | Republican | other | vacancies | Democrat | Republican | other | |||
| Wilson | Democrat | 64th 1915-1917 | 56CP | 40 | |||||
64TH CONGRESS- SENATE General Election of 3 November 1914 elected Class 3 Senate seats Special Election to a seat other than a Class 3
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Modified .