Republican John McCain castigated Democrat Barack Obama for voting against John Roberts as Supreme Court chief justice in a speech about the kind of judges McCain would nominate.

McCain offered an olive branch to the Christian right in a speech planned for Tuesday at Wake Forest University. The far right has been deeply suspicious of McCain, the expected GOP presidential nominee, because he has clashed with its leaders and worked against them on issues like campaign finance reform.

McCain promised to appoint judges who, in the mold of Roberts and Supreme Court Justice Samuel Alito, are likely to limit the reach of the Roe v. Wade decision that legalized abortion.

"They would serve as the model for my own nominees if that responsibility falls to me," McCain said in his prepared speech.

Obama likes to talk up his image as someone who works with Republicans to get things done, McCain said. Yet Obama "went right along with the partisan crowd, and was among the 22 senators to vote against this highly qualified nominee," McCain said.