Obama: WashPost "Needs to Take That Source Out of Their Rolodex"

Candidate disputes blind quote from alleged strategist saying the campaign plans to ramp up personal attacks on Clinton in interview with CNN radio's Roland Martin. Transcript here. Campaign manager David Plouffe responds similarly when asked on morning Obama media call. Plouffe: "We're not going to do that." But: Supporter Sen. McCaskill tells MSNBC she hopes superdelegates do focus on Clinton scandals from the '90s. Strategist tells WashPost that "aides are likely to turn to the controversies of Bill Clinton's White House years — Hillary Clinton's trading cattle futures, Whitewater and possibly impeachment." Plus: Clinton camp memo points to news stories characterizing Obama as going negative after past losses. Read it here.