Brayden Harrington, of New Hampshire, met the presidential candidate just a few short months ago. But in that time, the teenager was able to grow his confidence in his speaking thanks to the understanding of the former vice president, who overcame a stutter as a child.
"Without Joe Biden I wouldn't be talking to you today," Brayden said in the video message. "He told me that we were members of the same club, we… stutter."
Brayden's speech seemingly did the impossible in uniting the country behind the teenage boy, with commentators across the country saying it was the best speech of the night.
Mr Biden's boyhood stutter was profiled in The Atlantic after the candidate made some conspicuous verbal gaffes during the primary debates.
"It was really amazing to hear someone like me became vice president. He told me about a book of poems by Yeats he would read out loud to practise. He showed me how he marks his addresses to make them easier to say out loud. So I did the same thing today," Brayden said as he held his marked-up speech to the camera.
"And now I'm here talking to you today… about the future. About our future."
Brayden went on to make the case for Mr Biden as president to help the country and the world feel better, just like he had done by simply caring for a "regular kid".
"We all want the world to feel better, we need the world to feel better," he said. "I'm just a regular kid, and in a short amount of time Joe Biden made me more confident about something that has bothered me my whole life."
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