Concerns about President Joe Biden's ability to win the 2024 election are growing among key Democratic senators and former Obama advisor David Axelrod. Senators Michael Bennett, Jon Tester, and Sherrod Brown have expressed doubts about Biden's chances, with Tester specifically highlighting questions about Biden's performance and capability. Axelrod echoed these sentiments, suggesting Biden is more likely to lose by a landslide than narrowly win, citing concerns about his age and recent debate performance. Political betting markets like Polymarket show Biden's reelection odds plummeting, with predictions favoring a potential dropout and Vice President Kamala Harris taking the Democratic candidacy. Despite this, Biden insists he will continue his campaign, rebutting claims about his fitness for office in a recent ABC interview.