O’Malley: Unlike Sanders, I did not try to Primary President Obama in 2012

Former Maryland Gov. Martin O'Malley on Friday attacked Sen. Bernie Sanders for being disloyal to President Obama and for not being a lifelong Democrat.

"When President Obama was running for re-election, I was glad to step up and work very hard for him while Senator Sanders was trying to find someone to primary him," O'Malley told moderator Rachel Maddow at MSNBC’s First in the South Presidential Candidates Forum in South Carolina.