2010Flipped from DemocraticFinal resultsIncumbent defeated
2010 election for Delaware Senate District 15
Delaware State Senate · Delaware
Dave Lawson (R) won with 52.3% of the vote, defeating Nancy Cook (D) by 4.7 points, a seat Democrats won last time.
Dave LawsonRepublican · winner
52.3%8,370
Nancy CookDemocrat · incumbent
47.7%7,623
15,993 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 2010
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET