Senate Races: 2018 Election Predictions

National ResultsState ResultsExit PollsBallot MeasuresKey

Icons and Symbols

  • Scheduled
  • Voting
  • Processing
  • Projected Winner
  • Key Races
  • Runoff
  • Flipped Seat

Political Parties

  • Democratic
  • Republican
  • Libertarian
  • Green
  • Other
Key

Icons and Symbols

  • Scheduled
  • Voting
  • Processing
  • Projected Winner
  • Key Races
  • Runoff
  • Flipped Seat

Political Parties

  • Democratic
  • Republican
  • Libertarian
  • Green
  • Other
Predictions of the 2018 election resultsHOUSESENATESenate RaceSee a forecast where you liveSenate RacesArizonaCaliforniaConnecticutDelawareFloridaHawaiiIndianaMaineMarylandMassachusettsMichiganMinnesotaMinnesota (Special)MississippiMississippi (Special)MissouriMontanaNebraskaNevadaNew JerseyNew MexicoNew YorkNorth DakotaOhioPennsylvaniaRhode IslandTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingLoading estimates...Most Likely Outcome is forecasted to swing DEMOCRAT SENATE CONTROLREPUBLICAN SENATE CONTROLLess likely election resultMore likelyMargin of error predicts outcome 95% of the timeForecast Map

Forecast just for Senate races on the ballot in 2018

Each race is shaded by who is favored (blue for Democrat, purple for independent and red for Republican) with an arrow indicating how much that side is favored. An arrow pointing to the left or right means a candidate is heavily favored while an upward arrow means a very close race.

Forecast full Senate makeup after 2018 elections

Each state has two halves, one for each senator who represents the state. The arrow tells you how Democratic or Republican the state is expected to be based on an average of the forecast win margin (for seats up this year) and the overall state partisanship for other seats.

Harry Explains the ForecastWhat is the margin of error?Look, we’re making a forecast. It’s not going to be perfect. Anything within this range could reasonably happen, though we expect the result to be close to our best estimate.How does the prediction update?The prediction updates every day as more polls come out. The prediction should become more accurate the closer we are to the election.More questions?Tweet at Harry @forecasterentenHarry's Races to WatchMost competitive racesLargest swingThe 15 races with the smallest margin between partiesPredictions ScorecardCircles are drawn to mark each prediction made since The Forecast started. The timeline below shows a detailed history of the estimates.Estimated seat advantage over timeBy Harry Enten, Sam Petulla, Parker Quinn, Brice Acree, Vijith Assar, Matthew Conlen, Brad Oyler, Will Mullery, Joyce Tseng and Mark Barilla.Read The Forecast’s methodology.A

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