evidence: - Adam Smith of Washington: Smith on July 8 called on Mr. Biden to end his candidacy "as soon as possible." He said in a statement that presidential candidates "must be able to clearly, articulately, and strongly make his or her case to the American people. It is clear that President Biden is no longer able to meet this burden." Smith told CBS News that if Biden announced he was ending his bid, "there would be a huge sigh of relief amongst just about every Democrat in the House." [...] - Martin Heinrich of New Mexico: In a statement on July 19, Heinrich, who is up for reelection, praised Mr. Biden's leadership, but said "this moment in our nation's history calls for a focus that is bigger than any one person" in calling for him to drop out: "While the decision to withdraw from the campaign is President Biden's alone, I believe it is in the best interests of our country for him to step aside. By passing the torch, he would secure his legacy as one of our nation's greatest leaders and allow us to unite behind a candidate who can best defeat Donald Trump and safeguard the future of our democracy."