We saw a glimpse of it in the last debate:
The classic conservative wrap on liberalism is that sexual permissiveness led to numerous social problems including teen pregnancy and abortion. Obama declared, in effect, that he agreed with that critique. "Cavalier" sex, he said, cost society.
Obama's skin color has obscured a pretty basic fact about him: he seems to have had a very conservative private life as a public figure. His marriage and family life have been much more traditional than John McCain's - someone who admits to promiscuity and adultery and divorce. Unlike McCain he's a long-time regular church-goer. Biden is also a family man, devoted to his kids and first and second wife, and a tee-totaler.