2018Final results
2018 election for U.S. Senate in Michigan
U.S. Senate · Michigan
Debbie Stabenow (D) won with 52.3% of the vote, defeating John James (R) by 6.5 points.
Debbie StabenowDemocrat · winner
52.3%2,214,478
John JamesRepublican
45.8%1,938,818
Marcia SquierGreen
0.9%40,204
George E. Huffman IIIConstitution
0.6%27,251
John Howard WilhelmNatural Law
0.4%16,518
4,237,287 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.
Debbie StabenowJohn James
$13.5M
Raised by the campaign
$12.6M
$14.9M
Spent by the campaign
$12M
$1.8M
Cash on hand
$508K
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018
The candidates
Debbie Stabenow (D)John James (R)
Also on the ballot: Marcia Squier (Green), 0.9%; George E. Huffman III (Constitution), 0.6%; John Howard Wilhelm (Natural Law), 0.4%