2012Final resultsIncumbent defeated
2012 election for Delaware Senate District 4
Delaware State Senate · Delaware
Gregory F. Lavelle (R) won with 50.8% of the vote, defeating Michael S. Katz (D) by 3.3 points.
Gregory F. LavelleRepublican · winner
50.8%11,970
Michael S. KatzDemocrat · incumbent
47.5%11,188
Marcia Davinci GroffLibertarian
1.7%410
23,568 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 2012
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The candidates
Gregory F. Lavelle (R)Michael S. Katz (D)
Also on the ballot: Marcia Davinci Groff (Libertarian), 1.7%