BACK TO YOU. >> THANK YOU FOR THAT. TEAM COVERAGE WITH JIM DEFEDE. >>> A LOT TO TALK ABOUT TONIGHT. WHAT STOOD OUT TO YOU? >> Reporter: I DO NOT THINK THERE IS ANY OTHER WAY TO DESCRIBE IT. THIS WAS AN UNMITIGATED DISASTER FOR PRESIDENT BIDEN. HE HAD ONE GOAL COMING INTO THIS DEBATE, TO ADDRESS THE CONCERNS ABOUT HIS AGE AND ABILITY TO DO THE JOB. WHAT HE DID, HE SOLIDIFIED ALL OF THE PRECONCEPTIONS ABOUT HIM. HE CAME ACROSS AS OLD AND FEEBLE. IT WAS A STUNNING, STUNNING, TERRIBLE PERFORMANCE BY PRESIDENT BIDEN. I HEARD THAT HE POSSIBLY HAD A COLD, THAT DOES NOT MATTER AT THE END OF THE DAY. LET ME BE CLEAR,

DONALD TRUMP DID NOT HAVE A GOOD NIGHT EITHER. HE CAME ACROSS AS PETTY AND CRUEL. THE LIST OF THINGS THAT HE SAID THAT WERE OUTRIGHT LIES, ARE TO RUN FOR ME TO GET INTO AT THIS POINT. NONE OF THAT MATTERS. WHAT THAT MATTERS, THE TWO MEN STOOD ON THAT STAGE. THE WAY JOE BIDEN CARRIED HIMSELF WAS SO POOR THAT IT WAS ALL PEOPLE WERE TALKING ABOUT. THROUGHOUT THE DEBATE I WAS HEARING FROM DEMOCRATS WHO WERE IN PANIC FROM THE OUTSET, THE HOARSE VOICE AND THE INCOHERENT ANSWERS THAT THE PRESIDENT WAS GIVING. AND I THINK THERE IS GOING TO BE, YOU WILL HEAR CALLS IN THE HOURS TO COME AND DAYS TO COME FOR PRESIDENT.

BIDEN TO STEP ASIDE, TO RECOGNIZE HE SHOULD NOT CONTINUE AS THE PRESUMPTIVE NOMINEE AND TO OPEN THE CONVENTION THIS SUMMER. EXPLAINED TO US HOW THAT WOULD WORK? DEMOCRATS WERE CONCERNED GOING INTO THIS DEBATE AND NOW THEY ARE IN A PANIC BECAUSE OF WHAT YOU MENTIONED. TIMES THE PRESIDENT FROZE AND LOSING HIS TRAIN OF THOUGHT. HOW WILL THAT GO FORWARD IF THEY ARE SERIOUS ABOUT PUTTING SOMEBODY ELSE ON THE BALLOT? Reporter: THIS IS OF TO JOE BIDEN. VOTERS HAVE VOTED. DEMOCRATS VOTED AROUND THE COUNTRY AND HAVE VOTED IN SUPPORT OF JOE BIDEN TO BE THE INCENTIVE NOMINEE. AS A RESULT

HE WILL BE THE NOMINEE UNLESS JOE BIDEN DECIDES THAT HE SHOULD NOT MOVE FORWARD. THIS IS THE CONVERSATION THAT NEEDS TO TAKE PLACE IN THE WHITE HOUSE AND WITH HIS FAMILY, WHETHER OR NOT HE SHOULD CONTINUE. I MEAN, THE NATURE OF THE CALLS, I HAVE NEVER SEEN A DEBATE.

Presidential debate analysis: Who won, who lost?

Presidential debate analysis: Who won, who lost?