United States President Joe Biden has rejected calls to halt his re-election campaign, affirming his determination to continue despite concerns about his physical and mental capabilities. Biden, aged 81, has faced increasing scrutiny to address doubts about his competency following a lackluster debate performance against his rival, Donald Trump. Three Democratic officials have publicly urged Biden to step aside post-debate, citing his verbal stumbles and lapses in coherence. Despite these pressures, Biden has insisted on staying in the race, dismissing notions of conceding defeat to Trump in the upcoming election. At an Independence Day event, Biden responded to a supporter's encouragement, reaffirming his commitment to persevere in the campaign. In a radio interview, Biden acknowledged his debate missteps but vowed to continue fighting despite the setback. Democrats and donors alike have expressed apprehensions about Biden's electability; however, support from within the party has largely remained intact. While some voices within the Democratic Party have called for Biden's withdrawal, others have reiterated their backing for his candidacy. Concerns about Biden's fitness and age have heightened since the debate, with polls indicating reservations about his ability to serve another term. The possibility of Biden stepping down could lead to a significant shake-up in the political landscape, with potential successors including Vice President Kamala Harris and several governors. The outcome of the race remains uncertain, with implications for both parties as they navigate uncharted territory leading up to the presidential election.