Isn’t it self-evident?
No, not really. About the strongest argument would be how it was part of the communist push to destroy the family, but has anyone brought that up here yet?
However, it does not seem that we can have conclusive proof that the women’s vote is any more destructive than the man’s vote, or that (as what is seemingly implied here) that women vote monolithically for the left.
Remember, the Sixteenth and Seventeenth Amendments got pushed through by an all-male electorate.