KEEPING BARACK OBAMA away from Democratic candidates. “Obama is avoiding big campaign events and swing-state districts for fear of burying those in his party who still have a fighting chance. The candidate who filled a football stadium at his Greek revival convention now has to be squirreled away in backyard mini-gatherings and ‘indoors … [at] a $1 million fundraising dinner in suburban New Jersey on Wednesday night.’ . . . It will be nearly impossible for Obama to claim credit for any Democratic survivors. But he certainly will take the lion’s share of the blame by those who’ve come to appreciate just how politically radioactive he is.”