Pre-heat the oven to 350. Take a bundt pan and grease it well with butter, then dust it with flour. In a bowl, whisk together the flour, cocoa, baking soda and salt to mix it well and aerate it. In the bowl of a stand mixer, combine the butter and sugar and cream it thoroughly with the paddle attachment until fluffy. Add in each egg one at a time and beat them in thoroughly. Then pour in the vanilla. Lastly, add in about half of the dry ingredients, and then half of the wine. Repeat with the last of the dry ingredients and then the last of the wine until you have a well combined, smooth, chocolatey batter.