What is the Number One issue that separates progressive Democrats from conservative Republicans?

The New York Attorney General Letitia “Tish” James says “I chose to have an abortion. I walked proudly into Planned Parenthood, and I make no apologies to anyone! No one! I want you to know I am a woman of faith; I go to church.” Well, Margaret Sanger, you would be proud of Letitia. She killed her own baby and urges other black mothers to follow suit.