Barack ObamaBarack Hussein ObamaDemocrats duke it out in most negative debate so far Biden, Sanders battle over Cuba, Obama Biden attacks Sanders at debate over Obama primary MORE supporter Sen. Claire McCaskillClaire Conner McCaskill70 former senators propose bipartisan caucus for incumbents Democrats criticize Medal of Freedom for Limbaugh as 'slap in the face' Kansas City, Kan., responds to Trump tweet: We root for the Chiefs, too MORE (D-Mo.) hit back at Geraldine Ferraro on MSNBC Tuesday for calling Obama "sexist" and claiming she will likely not vote for the Illinois Senator.

"Frankly, it is bitterly disappointing to me that a woman like Geraldine Ferraro would actually publicly say she is thinking about supporting John McCainJohn Sidney McCainMeghan McCain says Steyer should drop out: 'I hate that guy' Sanders says idea he can't work with Republicans is 'total nonsense' GOP casts Sanders as 2020 boogeyman MORE, and what he would represent to women in this country," McCaskill said.

"Really, the issues are so much more important than the people here."

Earlier on the "Today Show" Ferraro reiterated her claim about Obama and said that she would blame a Hillary ClintonHillary Diane Rodham ClintonDemocratic insiders stay on the sidelines in 2020 race Hillicon Valley: Twitter falling short on pledge to verify primary candidates | Barr vows to make surveillance reforms after watchdog report | DHS cyber chief focused on 2020 The Hill's Campaign Report: High stakes at last Democratic debate before Super Tuesday MORE loss on gender.