Security guard Jacquelyn Brittany was standing in an elevator when she blurted “I love you” to Joe Biden. Wearing big smiles, they took a photo together, and video of the interaction went viral online.
Tuesday, in a video shown at the Democratic National Convention, she stood in what looked like the entrance to an elevator and nominated him as the Democratic Party presidential nominee.
“In the short time I spent with Joe Biden, I could tell he really saw me, that he actually cared, that my life meant something to him,” she said. “And I knew, even when he went into his important meeting, he’d take my story in there with him.”
https://www.latimes.com/politics/story/2020-08-18/democratic-convention-security-guard-biden-jacquelyn-brittany
And FWIW, in her own words, here is why AOC nominated Bernie...
https://mobile.twitter.com/AOC/status/1295902565750771717
I found the above in
this ABC News article