The Republicans are constantly saying how they are much better in that department. In reality, they have multiple spouses and/or a strong tendency to get pregnant out of wedlock.
It's the hypocrisy. Normally, the son of a semi-infamous politician's marriage ending would be completely unimportant. But his mother was several months pregnant when she herself got married, although to her credit she's still married to her first husband. His sister had a child out of wedlock. This young man's girlfriend was six months pregnant when they got married. And these are the kind of people who go around telling us we're immoral.