I read Giuliani's speech at the Values Voter Summit and found it as interesting for what it didn't include as for what it did. He talked quite a bit about abortion. He said he'd promote adoption and veto any efforts to eliminate existing restrictions on abortion or the impact of the Hyde Amendment prohibiting the use of federal funds to pay for abortion, opposition to partial birth abortion and support for parental notification laws.
He didn't devote one word to marriage and homosexuality related issues. While in the past he said he supported traditional marriage and opposed civil unions, there are still questions about his support for domestic partnerships. Also, his stance on gays in the military, ENDA, hate crimes, abstinence until marriage funding are concerns.
Both the life and marriage issues are non-negotiables for social conservatives and Giuliani hasn't assuaged the concerns of social conservatives on a number of social issues.