The final Democratic Debate in Iowa was preceded by the CNN report of Warren claiming Sanders had told her in 2018 that a woman could not be elected president, and the Debate ended with Warren snubbing Sanders attempt to shake hands.
Sanders has recently stepped up his attacks on former Vice-President Joe Biden over Biden's past support of the Iraq War, broad free-trade agreements and entitlement reform, among other issues.
Bottom line: Biden's ship stayed on course.
Sanders' campaign manager told The Washington Post Tuesday night that Warren "came to raise a concern, and [Sanders] said let's talk about that later", and Steyer gave few details about what he heard, other than to tell CNN "They were talking about getting together or something, I really didn't listen".
The hashtag #CNNisTrash quickly spread on Twitter after multiple questions from CNN correspondent Abby Phillip targeted Sanders for what he supposedly said to Warren in 2018. Both Warren and Sanders have serious expressions on their faces.
Warren played up those key points to her advantage in an exchange on gender and electability with Sen.
The field of qualifying candidates has narrowed dramatically over the past several months, a development that Klobuchar said has helped her.
The script reportedly instructed volunteers to say that Warren's supporters were "highly-educated, more affluent people who are going to show up and vote Democratic no matter what" and that "she's bringing no new bases into the Democratic Party".
According to the Democratic Party of Iowa, there will be four Iowa Caucuses held in Arizona, one at Queen Creek, southeast of Phoenix, and three in and around Tucson.
The accusation comes at a very inconvenient time for Mr Sanders. "Look at the men on this stage", she said.
Bottom line: Warren is making a high-stakes bet on gender.
Michael Halle, senior advisor to former South Bend, Indiana mayor Pete Buttigieg, told reporters this week that the caucus measure that counts for the campaign is ultimately the number of delegates. He has surprised - and at times annoyed - his rivals with his staying power. "We never missed a caucus we went to district conventions, state conventions". He, more than anyone in the race, may benefit from being able to campaign while the USA senators in the race return to Washington for Trump's impeachment trial.