The following indications demonstrate Texas had become a competitive, two-party state in the late 1970s except:

• toggling between Republican and Democratic governors in the 1970-1990s
• razor thin margins in several governor's races
• support for Democrats in statewide races and Republicans for national offices
• decreased roles in national politics for Texan politicians

1 answer

The indication that demonstrates Texas had not become a competitive, two-party state in the late 1970s is:

decreased roles in national politics for Texan politicians

This suggests a diminishing influence and involvement of Texas politicians on the national stage, which would imply a lack of competitiveness rather than the emergence of a robust two-party system in the state. The other points indicate a level of competition and engagement between the two parties during that period.