United States Senate election 2018 — Results
Election day: November 6, 2018
- Republican Party: 53 seats
- Democratic Party: 45 seats
- Independent (caucus with Democrats): 2 seats
About this election
The electoral system
Thirty-five seats were contested — the Class 1 senators plus two special elections, in Minnesota and Mississippi, to fill mid-term vacancies. As always, each seat is decided by statewide vote for a six-year term, with the chamber's two-per-state composition giving smaller, more rural states outsized weight. The map shows the winning party in each state that held a Senate race in 2018, including the two independents (Angus King of Maine and Bernie Sanders of Vermont) who were both re-elected.
Compiled and reviewed from official results by ElectioMap. See our data methodology.
Understanding this election
- How a Constituency Map Gets Built — what happens when no boundary file matches the districts
- How We Check an Election Figure — the checks every number passes before publication
- How Live Election Data Is Collected and Verified — from ballot box to published figure