1998Final results
1998 election for U.S. Senate in Oklahoma
U.S. Senate · Oklahoma
Don Nickles (R) won with 66.4% of the vote, defeating Don E. Carroll (D) by 35.1 points.
Don NicklesRepublican · winner
66.4%570,682
Don E. CarrollDemocrat
31.3%268,898
Mike MorrisIndependent
1.8%15,516
Argus W. Yandell Jr.Independent
0.5%4,617
859,713 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 1998
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.
Don E. CarrollDon Nickles
$8.6K
Raised by the campaign
$2.7M
$8.6K
Spent by the campaign
$2.4M
$0
Cash on hand
$945.9K
Other candidates' campaigns: Mike Morris $10.3K.
Campaign money: FEC, through Dec 31, 1998.
Source: FEC campaign filingsUpdated Dec 31, 1998
The candidates
Don Nickles (R)Don E. Carroll (D)
Also on the ballot: Mike Morris (Independent), 1.8%; Argus W. Yandell Jr. (Independent), 0.5%