2020Final results
2020 election for U.S. Senate in Arkansas
U.S. Senate · Arkansas
Tom Cotton (R) won with 66.5% of the vote, defeating Ricky Dale Harrington Jr. (Lib) by 33.1 points.
Tom CottonRepublican · winner
66.5%793,871
Ricky Dale Harrington Jr.Libertarian
33.5%399,390
1,193,261 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Ricky Dale Harrington Jr.Tom Cotton
$79.6K
Raised by the campaign
$9.1M
$64K
Spent by the campaign
$4.8M
$15.5K
Cash on hand
$6.4M
Campaign money: FEC, through Nov 23, 2020; FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020