Joe Biden Ponders Presidential Bid

Hillary Clinton apologizes over email server as the vice president considers a White House bid.
2:03 | 09/13/15

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Transcript for Joe Biden Ponders Presidential Bid
Let's turn now to the democrats. That race tightening. Hillary Clinton down to 37%, Bernie sanders, now, at 27% and Joe Biden at 20%. Even though he's not a candidate. But he's now offering his most personal reflections yet on his emotional struggle over whether to run. Here's ABC's Cecilia Vega. Reporter: Will he or won't he? This morning it's the question that every democrat is asking, but even Joe Biden may not have the answer. The vice president sure looked like a candidate in the running this week, hugging babies, kissing seniors. But then came his appearance on "The Late Show with Stephen Colbert." Biden began emotional talking about his son beau who died of brain cancer in may. I don't know what it was about him. He had this enormous sense of empathy. I know I'm sounding like a father -- anyway, but --Y what you said. Y Blihumity and the fear of the lord, our richest honor in life, and that's a very big part of who I am. Humility and the fear of the lord. I don't get that impression with him. Ma ybe I'm wrong. But I don't get that impression. Donald Trump said that was an cktaat. Your reaction? It wasn't meant as an attack and it was certainly spun that way by the media, because they enjoy creating a fight. They love to have a gladiator en sce. And, you know, it wasn't my intention. And I'm certainlgoing to allow it to become my intention subsequently, regardless of how anyone reacts to it. But listen to what trump I'm sorry about that. Reporter: It came during an interview with ABC's David Muir a day after she said she had nothing to apologize for. I'm sorry that it has raised all of these questions. I do take responsibility for making what was clearly not the best decision.

This transcript has been automatically generated and may not be 100% accurate.

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