Alexandria Ocasio-Cortez, the progressive US Congress and the feeling of social media, said she would be "pushed" to support the favorite, Joe Biden, in the democratic presidential presidential elections.
The claim is the last sign of the apathy of the left towards the former vice president, who rose ahead of Senator Bernie Sanders and other rivals in recent polls.
Sanders, a self-proclaimed democratic socialist, appears to be the favorite to secure the valuable recognition of Ocasio-Cortez, 29, but said he is still far from making a decision.
"I'm not close to an approval announcement any time soon," he told the Guardian Tuesday. "I'm still trying to manage my work. It looks old but I only have five months and we have some time. The debates are in the summer and our first primary elections for the whole country are not up until # 39 next year. "
Asked if he would consider the idea of supporting Biden, widely seen as a centrist, Ocasio-Cortez replied: "It would be difficult to see it happen, to be honest, in a primary".
Biden, who comfortably led every opinion poll, was charged last week when Reuters reported that he was pursuing a "middle" approach to the climate crisis. He later distanced himself from the implications.
Ocasio-Cortez has criticized politicians seeking "a mid-level approach to saving our lives". Sanders, in second place in most polls, tweeted that there was no "middle ground" when it comes to climate policy ".
If and when Ocasio-Cortez endorses a candidate, Sanders will probably remain the favorite to secure his support. She was the organizer of her main campaign of 2016 against Hillary Clinton. The couple appeared during a demonstration in Washington last week to support the Green New Deal climate plan.
In a brief interview on Tuesday the deputy, who has over 4 million followers on Twitter, also reiterated her request for indictment of Donald Trump. "I think the reasons have been there for a while, but the case is really coming to a bigger point we've never seen before," he said.
Democratic leaders are putting the Speaker of the House, Nancy Pelosi, under pressure to go ahead with the process. Ocasio-Cortez added: "I know the conversation is really changing this week in the caucus and so we will see where the speaker lands."