Carbs aren't nearly that low, even in dry wines... Remember serving sizes, too. Many people have a larger serving than 3.5 oz. (standard wine glasses are close to 10 oz. - if you fill that up you've almost tripled your serving).
Here are some averages:
Wine, red (3.5 fl oz) - 1.75g
Wine, rose (3.5 fl oz) - 1.5g
Wine, white (3.5 fl oz) - 1g
Wine, dessert, sweet (3.5 fl oz) - 14.1g
Wine, dessert, dry (3.5 fl oz) - 12g
Wine, table, all (3.5 fl oz) - 3.2g
Wine, cooking (3.5 fl oz) - 6.4g
Cider, dry (1 pint) - 15g
Gin, Rum (unflavored), Vodka, Whisky (1 fl oz) - 0g
Sherry (2 fl oz) - 3g
Port (2 fl oz) - 6g
Guinness (1/2 pint) - 4g
Now for a public service announcement... Also remember that, although the carbs might be low, or even nothing, alcohol will slow or stop your weight loss until it's out of your system. You'll also want to remember that when you're low-carbing, you'll probably feel the alcohol much sooner than you would otherwise. Alcohol can also induce cravings, or alter your judgement... making those chips, etc. look MIGHTY good!