WATCH: Why Biden Could Be Formidable In 2020: Comforting Meghan McCain About Her Father's Brain Cancer

Appearing on "The View" and comforting a tearful Meghan McCain about her father John’s fight with brain cancer, former Vice President Joe Biden showed exactly why he would be a formidable candidate opposing President Trump in 2020 if he chooses to run. Unlike Hillary Clinton, whose cold demeanor seemed a crucial part of why many people found her unpalatable as a candidate (among myriad other reasons), Biden, whatever his resume reveals about his leftist perspective, displayed warmth that could be a powerful magnet for voters.

McCain initiated the dialogue by saying, “This is the hard part. Bear with me, okay? Couldn’t get through your book, I tried. Your son, Beau, had the same cancer that my father was diagnosed with six months ago. (tearing up) I’m sorry.”

Biden responded, “There’s a lot of hope.”

McCain continued, “I think about Beau almost every day, and I was told, (tearing up) I’m sorry, that this doesn’t get easier, but that you cultivate the tools to work with this and live with this. I know you and your family have been through tragedy that I couldn’t conceive of; what would you tell people; it’s not about me; it’s about everyone.”

Biden interjected, “No, no, no, no, no. It is about everyone. One of the things that gave Beau courage — my word — was John. Your dad — you may remember, when you were a little kid — took care of my Beau. Your dad … became friends with my Beau. And Beau talked about your dad’s courage, not about his illness, but about his courage.”

Biden then offered McCain reason for hope, stating:

There’s a lot of things happening. Any of you have somebody diagnosed with glioblastoma, which is about as bad as it gets? There’s breakthroughs that are occurring now. There’s four things that are going on, and it can happen tomorrow. For example, at the University of Pennsylvania, where I teach now, at the Abramson Center, what they’ve found out is a thing called a car-T cell. What they do is they take your T-cells, your immune system cells, out of your body and they reinforce it with an antigen, and that finds the cancer cells, because the cancer cells can hide from your immune system. And they had a breakthrough with a new drug dealing with child leukemia, and it’s working. There’s other things called — what they did with Beau — it’s starting to happen now. They’re using this car-T cell; they inject a virus, and it generates into the cancer.

So there is hope. And if anybody can make it, your dad can.

(Addressing the audience) Her dad is one of my best friends. Her dad goes after me hammer and tongs. We’re like two brothers who were somehow raised by different fathers, or something, because of our points of view. (To McCain) And I know, and I mean this sincerely, even when your dad got mad at me, said I should get the hell off the ticket, remember what I said about your dad? I said, I know, and I mean this sincerely, I know if I picked up the phone tonight, and called John McCain, and said, “John, I’m at Second and Vine in Oshkosh, and I need your help. Come,” he’d get on a plane and come, and I would for him, too.

The thing that I’ve found, the thing that I’ve found, and Beau insisted on, and your dad is going to insist on, is you’ve got to maintain hope. There’s hope. You have to have hope.

Video below:

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