List of United States Senate election results by state

The following table shows regularly scheduled United States Senate elections by state by year. The table does not include appointments or special elections, though it does include elections that occurred upon a state delegation's admission or readmission to the Senate. The table also includes elections that filled vacancies to unexpired terms that had never been filled due to legislative deadlock or an elected candidate's failure to qualify. The table does not denote post-election party switching. Note that, particularly prior to the ratification of the 17th Amendment in 1913, many regular elections took place in odd years rather than in the preceding even years.

Legend Label Party Label Party Label Party Label Party Label Party PA Pro-Administration Faction AJ Anti-Jacksonian FS Free Soil Party SR Silver Republican Party — No regularly scheduled election AA Anti-Administration Faction D Democratic Party A American Party FL Farmer-Labor Party I Independent F Federalist Party R Republican Party Po Populist Party Sp Split resultCandidates from two different parties were elected. This occasionally occurred when a state delegation was first admitted or re-admitted to the Senate. Unless otherwise noted, the split was between the Republican and Democratic parties. DR Democratic-Republican Party Nu Nullifier Party U UnionistsIncludes all candidates elected by Unionist parties. J Jacksonians W Whig Party Ra Readjuster Party

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