Alcohol Consumption and Political Ideology: What’s Party Got to Do with It?
Pavel A. Yakovlev and Walter P. Guessford
Recent research in psychology and sociology has established a connection between political beliefs and unhealthy behaviors such as excessive alcohol, tobacco, and illegal drug consumption. ... we find that when a state becomes more liberal politically, its consumption of beer and spirits rises, while its consumption of wine may fall. Our findings suggest that political beliefs are correlated with the demand for alcohol.
http://journals.cambridge.org/download.php?file=%2FJWE%2FJWE8_03%2FS1931436113000230a.pdf&code=04e7ec72cde63b9c9ea5704c1f57a0b3
It might be because wine is expensive, so only the 1%ers can afford it. However, there may be more liberals here because it is how the 99%ers have figured out how to become a wino on a budget.