The campaigns of former New Jersey Sen. Bill Bradley, Vice President Al Gore, Texas Gov. George W. Bush, Utah Sen. Orrin Hatch and Arizona Sen. John McCain agreed to the civility pledge.

The pledge says that candidates will agree to conduct their campaigns with "respect for their opponents" and avoid personal attacks that "demonize or dehumanize their opponents."

The pledge was announced at the same time as poll results were released by the Institite for Global Ethics , showing that two-thirds of the public saying negative attack-oriented campaigning is wrong and three-fourths would have more respect for candidates who sign and abide by a code of conduct.

"None of the campaigns said they didn't want to do it, we just included those who signed on the document," Roger Limoges, public policy associate with the Interfaith Alliance, which sponsored the pledge.

Jeffrey Bell, senior consultant to Gary Bauer's campaign, said he has not seen the pledge, but will be looking at it. A campaign aide for Steve Forbes said they were approached to sign it, but declined while saying they would campaign on the issues. Connie Hair, a spokeswoman for the Alan Keyes campaign, said she hadn't seen it.