They are voting for her gender. It really is just that simple. Just like they voted for 0 based on his skin color.
You got it half right - The Vagina First Crowd require a pro-abortion Globalist No Borders Leftie for their Chosen One (crucify Sarah Palin, Michelle Bachman and the late Phyllis Schlaffly). The BLM Crowd require the same thing (crucify Herman Cain, Allen West, Justice Thomas).