After discussing the changing demographics of the United States at the Bipartisan Policy Center, Ruy Teixeira and Sean Trende spoke with Governing magazine about the political outcomes of those demographic trends (Source).
In the short term, those demographics favour the Democratic Party, because of the growing minority vote, white college graduates, the millennial generation and the disappearing white working class. Longer term, there could be a shift back to the right if “the economic well-being of Hispanics were to improve in the coming years,” because exit poll data shows that higher income Hispanics are more likely to vote Republican than other higher income minority voters. This is something I have discussed before here, and it’s a reasonable outcome to suppose, because we’ve seen it before as white voters in the South began to switch to the Republican Party as wealth and incomes began to rise.
A recent book by Cal Jillson - Lone Star Tarnished - discusses the importance of demographics in the future of Texas as the Anglo population has grown slower than the national population since 1980 and the Hispanic population grows faster than any other group in the state (Source). As Prof. Jillson notes in his book, how this effects the state will depend on the development of the Hispanic population (which is tied to the state’s infrastructure, such as public education). The effects are not just economic and social, but political as well, as both parties will be effected by the growth and development of Texas’ Hispanic population.