The 2018 Delaware Senate election was held on November 6, 2018, to elect 10 of the 21 members to Delaware's State Senate. The election coincided with the elections for other offices, including U.S. Senate, U.S. House of Representatives, and state house. The primary election was held on September 6, 2018.
Delaware Republicans needed to have a net gain of one seat to flip the chamber from the Democrats, however, Democrats increased their majority in the Senate by gaining one seat (winning 12 seats, compared to nine seats for the Republicans).
Results summary DistrictIncumbentPartyElected SenatorParty 2 Margaret Rose HenryDem Darius BrownDem 3 Robert MarshallDem Elizabeth LockmanDem 4 Gregory LavelleRep Laura SturgeonDem 6 Ernesto LopezRep Ernesto LopezRep 10 Stephanie HansenDem Stephanie HansenDem 11 Bryan TownsendDem Bryan TownsendDem 16 Colin BoniniRep Colin BoniniRep 17 Brian BushwellerDem Charles ParadeeDem 18 Gary SimpsonRep David WilsonRep 21 Bryant RichardsonRep Bryant RichardsonRep
Party Candi-dates Votes Seats No. % No. +/– % Democratic 10 94,396 57.91% 12 1 57.14% Republican 8 68,613 42.09% 9 1 42.86%Total 18 163,009 100% 21 100%
Predictions SourceRankingAs of Governing | October 8, 2018
Detailed results
District 2 Incumbent Democratic Majority Leader Margaret Rose Henry had represented the 2nd district since 1994. Henry retired, and fellow Democrat Darius Brown won the open seat.
District 3 Incumbent Democrat Robert Marshall had represented the 3rd district since 1979. Marshall retired, and fellow Democrat Elizabeth Lockman won the open seat.
District 4 Incumbent Republican Gregory Lavelle had represented the 4th district since 2013. Lavelle lost re-election to Democrat Laura Sturgeon.
District 6 Incumbent Republican Ernesto Lopez had represented the 6th district since 2013.
District 10 Incumbent Democrat Stephanie Hansen had represented the 10th district since 2017.
District 11 Incumbent Democrat Bryan Townsend had represented the 11th district since 2013.
District 16 Incumbent Republican Colin Bonini had represented the 16th district since 1995.
District 17 Incumbent Democrat Brian Bushweller had represented the 17th district since 2009. Bushweller retired, and fellow Democrat Charles Paradee won the open seat.
District 18 Incumbent Republican Minority Leader Gary Simpson had represented the 18th district since 1999. Simpson retired, and fellow Republican David Wilson won the open seat.
District 21 Incumbent Republican Bryant Richardson had represented the 21st district since 2015.
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