The 1966 Texas gubernatorial election was held on November 8, 1966, to elect the governor of Texas. Incumbent Democratic governor John Connally was easily reelected to a third term, winning 73% of the vote to Republican T. E. Kennerly's 26%. Connally swept all 254 counties in this election and was inaugurated for his third term on January 17, 1967.

The election is, to date, the last time that a candidate for Governor of Texas won more than 70% of the vote, as well as the last in which a candidate won every county. As of 2026, Randall, Ochiltree, and Smith counties have not voted for the Democratic candidate since this election.

Primaries

Republican

Republican primary results
PartyCandidateVotes%
RepublicanT. E. Kennerly49,568100.00%
Total votes49,568100.00%

Democratic

Democratic primary results
PartyCandidateVotes%
DemocraticJohn Connally (incumbent)932,64174.29%
DemocraticStanley C. Woods291,65123.23%
DemocraticJohnnie Mae Hackworthe31,1052.48%
Total votes1,255,400100.00%

Results

General election results
PartyCandidateVotes%±%
DemocraticJohn Connally (incumbent)1,037,51772.76%1.03
RepublicanT. E. Kennerly368,02525.81%0.19
ConstitutionTommye Gillespie10,4540.73%0.41
ConservativeBard Logan9,8100.69%N/A
Write-in550.00%N/A
Total votes1,425,861100.00%
Democratic hold