1978Final results
1978 election for Texas's 15th District
U.S. House · Texas
Eligio de la Garza (D) won with 66.2% of the vote, defeating Robert Lendol McDonald (R) by 32.4 points.
Eligio de la GarzaDemocrat · winner
66.2%54,560
Robert Lendol McDonaldRepublican
33.8%27,853
82,413 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1978
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET