Final answer:
The student's question asks for Ted Cruz's prediction if Texas turns blue. No specific prediction from Cruz is provided in the reference material. A speculative answer can be given based on the political implications of such a shift in a historically Republican-dominated state.
Step-by-step explanation:
The question refers to the political landscape in Texas and specifically what U.S. Senator Ted Cruz predicted would occur if the state were to shift from its traditional conservative ("red") orientation to a more liberal ("blue") one. The historical context provided, such as the tensions between Texas and other entities as well as political strategies like those of President James K. Polk, helps to underscore the longstanding significance of Texas in American politics.
However, the reference provided does not include Ted Cruz's prediction on Texas turning blue. In the contemporary context, such a prediction would likely focus on the implications for national elections, given that Texas is a state with a large number of electoral votes that traditionally vote Republican. If it were to 'turn blue' and begin to regularly elect Democrats, this would indeed 'shatter the balance' of national politics by making it more difficult for Republicans to win presidential elections and potentially altering the balance in Congress.