1990Final results
1990 election for Maryland's 4th District
U.S. House · Maryland
Charles McMillen (D) won with 58.9% of the vote, defeating Robert P. Duckworth (R) by 17.7 points.
Charles McMillenDemocrat · winner
58.9%85,601
Robert P. DuckworthRepublican
41.1%59,846
145,447 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 1990
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.
Charles McMillenRobert P. Duckworth
$757.1K
Raised by the campaign
$41.2K
$560.9K
Spent by the campaign
$41.1K
$328.3K
Cash on hand
$74
Campaign money: FEC, through Dec 31, 1990.
Source: FEC campaign filingsUpdated Dec 31, 1990