2004Final results
2004 election for Connecticut Senate District 20
Connecticut State Senate · Connecticut
Andrea L. Stillman (D) won with 61.3% of the vote, defeating Mark Diebolt (R) by 22.6 points.
Andrea L. StillmanDemocrat · winner
61.3%24,362
Mark DieboltRepublican
38.7%15,371
39,733 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 2004
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET