"I think I'm the most qualified person to run for president. I beat him once, and I will beat him again," Anadolu Agency (AA) quoted Biden during a press conference on the final day of a NATO summit, referring to his rival, former President Donald Trump.
"I'm not in this for my legacy. I'm in this to complete the job I started," he added.
Biden said he intends to keep moving forward "because I've got more work to do. We've got more work to finish. We've made so much progress. Think about it."
"I'm optimistic about where things are going," he added.
His remarks came in response to growing calls from Democratic lawmakers, donors, and supporters for Biden to drop out of the race.
Biden also mentioned that US allies at the NATO summit encouraged him to run for president again.
Biden has been facing calls to withdraw his candidacy since his poor performance against Trump in their first presidential debate on June 27.
If re-elected, the Democratic president will be 86 years old when he leaves office.
-- BERNAMA
