The 1998 Delaware Senate election was held on November 3, 1998, to determine which party would control the Delaware Senate for the following two years in the 140th Delaware General Assembly. Ten out of the 21 seats in the Delaware Senate were up for election and the primary was held on September 12, 1998. Prior to the election, 12 seats were held by Democrats and 9 seats were held by Republicans. The general election saw Democrats hold their majority in the State Senate.

Results Summary DistrictIncumbentPartyElected SenatorParty 2 Margaret Rose Henry Dem Margaret Rose Henry Dem 3 Robert Marshall Dem Robert Marshall Dem 4 Richard Hauge Rep Dallas Winslow Rep 6 Liane Sorenson Rep Liane Sorenson Rep 10 Steven Amick Rep Steven Amick Rep 11 Donna Reed Rep Tony DeLuca Dem 16 Colin Bonini Rep Colin Bonini Rep 17 John Still III Rep John Still III Rep 18 Robert Voshell Dem Gary Simpson Rep 21 Robert Venables Sr. Dem Robert Venables Sr. Dem

Party Candi-dates Votes Seats No. % No. +/– % Democratic 8 34,557 46.49% 13 61.90% Republican 8 38,597 51.93% 8 38.10% Constitution 1 1,171 1.58% 0 0.00%Total 17 74,325 100% 21 100%

Retirements Richard Hauge (R-District 4) retired, seat won by Dallas Winslow (R). Robert Voshell (D-District 18) retired, seat won by Gary Simpson (R).

Defeated incumbents Donna Reed (R-District 11) lost re-election to Tony DeLuca (D).

Closest races Seats where the margin of victory was under 10%: (gain)

(gain)

Detailed Results District 2 Incumbent Republican turned Democrat Margaret Rose Henry has represented the 2nd district since 1994.

District 3 Incumbent Democrat Robert Marshall has represented the 3rd district since 1979.

District 4 Incumbent Republican Richard Hauge has represented the 4th district since 1989. Hauge didn't seek re-election and fellow Republican Dallas Winslow won the open seat.

District 6 Incumbent Republican Liane Sorenson has represented the 6th district since 1995.

District 10 Incumbent Republican and Minority Leader Steven Amick has represented the 10th district since 1995.

District 11 Incumbent Republican Donna Reed has represented the 11th district since 1995. Reed lost re-election to Democrat Tony DeLuca.

District 16 Incumbent Republican Colin Bonini has represented the 16th district since 1995.

District 17 Incumbent Republican John Still III has represented the 17th district since 1989.

District 18 Incumbent Democrat Robert Voshell has represented the 18th district since 1993. Voshell didn't seek re-election and Republican Gary Simpson won the open seat.

District 21 Incumbent Democrat Robert Venables Sr. has represented the 21st district since 1989.

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