2020Final results
2020 election for U.S. Senate in Texas
U.S. Senate · Texas
John Cornyn (R) won with 53.5% of the vote, defeating Mary "mj" Hegar (D) by 9.6 points.
John CornynRepublican · winner
53.5%5,961,643
Mary "mj" HegarDemocrat
43.9%4,887,315
Kerry Douglas McKennonLibertarian
1.9%209,623
David B. CollinsGreen
0.7%81,753
11,140,334 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.
Mary "mj" HegarJohn Cornyn
$29.6M
Raised by the campaign
$28.6M
$29.6M
Spent by the campaign
$33.8M
$86.6K
Cash on hand
$633.5K
Other candidates' campaigns: Kerry Douglas McKennon $12.7K.
Campaign money: FEC, through Dec 31, 2020.
Source: FEC campaign filingsUpdated Dec 31, 2020
The candidates
John Cornyn (R)Mary "mj" Hegar (D)
Also on the ballot: Kerry Douglas McKennon (Libertarian), 1.9%; David B. Collins (Green), 0.7%