2008Final results
2008 election for Delaware's at-large District
U.S. House · Delaware
Michael Castle (R) won with 61.1% of the vote, defeating Karen Hartley-Nagle (D) by 23.1 points.
Michael CastleRepublican · winner
61.1%235,437
Karen Hartley-NagleDemocrat
38.0%146,434
Mark Anthony ParksLibertarian
0.9%3,586
385,457 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 2008
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.
Karen Hartley-NagleMichael Castle
$27.8K
Raised by the campaign
$1.5M
$27.8K
Spent by the campaign
$1.8M
$58
Cash on hand
$862.7K
Campaign money: FEC, through Dec 31, 2008.
Source: FEC campaign filingsUpdated Dec 31, 2008