Senator Chris Murphy (D-Conn.) expressed regret over former President Joe Biden's decision to run in the 2024 presidential election, stating that he should have stepped aside for a more open contest. In an interview with CBS News, Murphy reflected on the mistakes made by the Democratic Party, particularly in light of Biden's poor debate performance against President Trump, which exacerbated existing concerns about Biden's age and mental fitness. Following the debate, Biden withdrew from the race, leading to Kamala Harris assuming the Democratic nomination. Harris ultimately lost to Trump, contributing to a broader Democratic defeat in the House and Senate races. Murphy's comments come as he promotes his new book, where he discusses the tribal nature of current politics and the tendency of party members to overlook their leaders' mistakes. Jill Biden also shared her distress during the debate, recalling her shock at her husband's performance, which she described as frightening and unprecedented.