2018Final results
2018 election for Oklahoma's 4th District
U.S. House · Oklahoma
Tom Cole (R) won with 63.1% of the vote, defeating Mary Brannon (D) by 30.1 points.
Tom ColeRepublican · winner
63.1%149,227
Mary BrannonDemocrat
33.0%78,088
Ruby PetersIndependent
3.9%9,323
236,638 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Mary BrannonTom Cole
$17K
Raised by the campaign
$2M
$10.8K
Spent by the campaign
$2M
$907
Cash on hand
$1.2M
Campaign money: FEC, through Jan 31, 2019; FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018