2018Flipped from DemocraticFinal results
2018 election for U.S. Senate in Missouri
U.S. Senate · Missouri
Josh Hawley (R) won with 51.4% of the vote, defeating Claire McCaskill (D) by 5.8 points, a seat Democrats won last time.
Josh HawleyRepublican · winner
51.4%1,254,942
Claire McCaskillDemocrat
45.6%1,112,944
Craig O'DearIndependent
1.4%34,398
Japheth CampbellLibertarian
1.1%27,316
Jo CrainGreen
0.5%12,708
2,442,315 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.
Claire McCaskillJosh Hawley
$37.7M
Raised by the campaign
$11.9M
$38.3M
Spent by the campaign
$11.5M
$241.3K
Cash on hand
$475.5K
Other candidates' campaigns: Craig O'Dear $634.7K · Jo Crain $6.3K · Japheth Campbell $1.8K.
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018
The candidates
Josh Hawley (R)Claire McCaskill (D)
Also on the ballot: Craig O'Dear (Independent), 1.4%; Japheth Campbell (Libertarian), 1.1%; Jo Crain (Green), 0.5%