Martha Raddatz is the moderator of tonight’s vice presidential debate. In 1991, Barack Obama attended her wedding. A year later, her then-husband, now a high level administration appointee and a personal friend of the president, attended the Obamas’ wedding. Irrelevant information? Put it this way: If Raddatz were a judge, she’d likely have to recuse herself from cases pertaining to the Obamas. We’re not arguing that Raddatz will slant tonight’s debate in the Obama campaign’s favor —any more than a member of Congress would automatically vote for an appropriation simply because it helps a campaign contributor. We are arguing that...