1984Final results
1984 election for Delaware Governor
Governor · Delaware
Michael Castle (R) won with 55.5% of the vote, defeating William T. Quillen (D) by 11.1 points.
Michael CastleRepublican · winner
55.5%135,250
William T. QuillenDemocrat
44.5%108,315
243,565 votes
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET
The seat over time
D − R margin in this seat's races around 1984
Races before and after
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET