Former congressman Tom Campbell, a supporter of gay marriage, finds himself under attack and his previous front-runner status reduced to a statistical tie with former Hewlett-Packard CEO Carly Fiorina in one poll. Another poll taken about the same time showed Campbell clinging to a narrow lead.

The National Organization for Marriage is spending $300,000 on television ads that liken Campbell to Boxer on taxes and gay marriage, calling them two peas in the same liberal pod.