 Senator Bernie Sanders says he is not confident President Biden can win the election this fall in the wake of last week's debate. But like most of the rest of the Democrats in Congress, he says he does not want Biden to step aside. The Vermont senator's unyielding support for the embattled president highlights the divide between the Democratic Party's leadership and the private conversations of many donors, strategists, and party insiders who want to replace Biden to avoid what many see as certain defeat this November.