It's all about character, if a man or woman has a high moral character he or she will not approve killing unborn babies or granting same sex couples the right to marry.
AFAIC if a man or woman doesn't have a good moral character he/she can't be trusted and isn't qualified to be chief executive of the USA. We should have learned that lesson well from our experience with Clinton, whose moral character is on the same level as a bitch dog in heat.