2004Final results
2004 election for Delaware's at-large District
U.S. House · Delaware
Michael Castle (R) won with 69.1% of the vote, defeating Paul Donnelly (D) by 39.4 points.
Michael CastleRepublican · winner
69.1%245,978
Paul DonnellyDemocrat
29.7%105,716
Write-ins and other votesOther party
0.7%2,337
William E. MorrisLibertarian
0.6%2,014
356,045 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 2004
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Paul DonnellyMichael Castle
$4.4K
Raised by the campaign
$992.2K
$4.4K
Spent by the campaign
$902.7K
$0
Cash on hand
$1M
Campaign money: FEC, through Oct 20, 2004; FEC, through Dec 31, 2004.
Source: FEC campaign filingsUpdated Dec 31, 2004