Look at this 1917 booklet that lists every reason women should not vote

From Futility Closet:

This was in the Public Domain Review yesterday — in 1917 the National Woman Suffrage Association published a little book purporting to give every reason women shouldn't be given the franchise. Inside, every page was blank.

The 19th amendment passed three years later. "Men and women are like right and left hands," wrote Jeannette Rankin. "It doesn't make sense not to use both."