Well, a gender gap like that isn't special to the US.
We have the same in Canada and I suppose elsewhere.
Easy to explain, because the women are usually poorer than men and have more "social" jobs (nursing, etc...) which make them see the sad life of poor people, while more men are in leadership positions, where they see more benfits with right-wing positions.
I always thought it was because women vote based on emotion more than men do.
The women vote is 5% more minority than the men vote. That is the explanation. Also, there's a sizable segment of single women with children who rely on taxpayer-funded welfare for their livelihood.
Example: Georgia's registered voters
Registered men: 29% black
Registered women: 34% black
