2018Final results
2018 election for Texas's 13th District
U.S. House · Texas
Mac Thornberry (R) won with 81.5% of the vote, defeating Greg Sagan (D) by 64.6 points.
Mac ThornberryRepublican · winner
81.5%168,992
Greg SaganDemocrat
16.9%35,075
Calvin DeweeseLibertarian
1.5%3,174
207,241 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.
Greg SaganMac Thornberry
$50.3K
Raised by the campaign
$1.4M
$46.7K
Spent by the campaign
$1.4M
$2.4K
Cash on hand
$458.1K
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018