Key data on this page includes: Prediction Markets (BetfairPredictIt), Polling (RealClearPolitics), Fundamentals (Incumbency, Past Voting Results, etc.). Click here for details of the data collection and aggregation process. Want some additional insight on the values? Research papers are at ResearchDMR or email David directly.

October 25, 2018 (9:30 AM): Today Democrats control 49 and Republicans 51 seats. Democrats officially have just 23 seats going into election and Republicans 42, but including really certain elections: Democrats 42 and Republicans 46. But, only 2 seats leaning hard Democratic this morning (NJ, WV) with 4 leaning hard Republicans (MS-S, ND, TX, TN). Six really tight election: MO, AZ, IN, NV, FL, MT. Thus, Republicans 90 percent to control senate in 2019.

Overall Senate Control After 2018 Election

Senate Elections for 2018 Election