I love to talk about politics, and I've been talking to people in California wine country for a long time. But I'm not about to bust anybody for conversations they may have thought were off the record. People could get fired if their name were to show up in a blog post supporting a candidate -- any candidate. I'm not Donald Trump; I don't wake up in the morning hoping to say, "You're fired."
So this post is about generalities, not specific people.
NATIONAL POLITICAL ISSUES OF INTEREST
The wine industry cares more about immigration than most, and on the whole is very pro-immigration. The industry cares about environmental regulations, but there is no unified stance: plenty of people are disdainful of the government's ability to write sensible laws. Everybody would come together to fight more sin taxes on alcohol, but the powerful distribution arm of the wine industry likes red-tape regulations on distribution and sales, and so do some of the largest wineries because they realize it gives them an advantage.
The overwhelming majority of winemakers in California are Democrats. This makes sense, as they are scientists. Because of this, the media and to a lesser extent the public gets the sense that the California wine industry is strongly Democratic -- something Napa Valley Vintners would not like you to believe, as Republicans buy a lot of expensive Cabernet. In the media, we exalt winemakers, often too much (yes, me too.) Statistically, winemakers don't have that many votes, nor do they donate much money. Maybe the wine industry does lean Democratic, because California does in general, but it's not a landslide. Read on.
This is the most complicated and interesting category.