Speaking as an antifascist who spends a lot of time monitoring them: usually 5% - 10% with this sort of flagshagger crowd.
This has an interesting effect. Because women are so rare, it's possible for a woman who is willing to toe the party line completely to become a spokesperson or even leader quite rapidly. All you have to do is know what they want to hear and repeat it back to them. The fash love to hear a woman saying what they want to hear, because it makes them think that it's a more widespread view than it is, and there's money in doing that. This was the grift that Anne-Marie Waters and Posie Parker ran. There isn't much longevity in it though: the fash will also inevitably move on to other leaders after getting bored with you. Ask Waters or Parker how relevant they are today.