Former Vice President Joe Biden had a great Super Tuesday 2.0, making him the all-but-certain Democratic presidential nominee. While some Democrats are calling on the primary to officially be over, others are warning Sen. Bernie Sanders against dropping out.

There are rumors that Bernie will suspend his campaign this week. BAD IDEA



Biden's cognition is deteriorating rapidly. A pandemic is spreading. Think of how quickly things changed in just the past 10 days. No reason not to keep running, unless you capitulate to the DNC — Michael Tracey (@mtracey) March 11, 2020

And he’s got a point. Just look at what some observers on Twitter noticed about Biden’s thank you video to supporters on Tuesday: the man couldn’t even speak for 25 seconds straight.

This video is spliced together



How hard is it to get a coherent 25 second statement out of Joe Biden? https://t.co/xrksNFginV — Aaron Manning (@AManning1717) March 11, 2020

It actually looks spliced together.... Where’s the full video???? — Jenna Ellis (@JennaEllisEsq) March 11, 2020

Earlier this week the hashtag #BidensCognitiveDecline swept Twitter, thanks in part to former 2016 Green Party candidate Dr. Jill Stein.

Biden's team won't let him do interviews. He made 2 short teleprompter speeches in Missouri this weekend & both generated massive gaffes that went viral. You can't beat Trump by trying to hide to avoid the issue of #BidensCognitiveDecline. How is this not a massive red flag? — Dr. Jill Stein?? (@DrJillStein) March 9, 2020

Fox News senior political analyst Brit Hume told "Tucker Carlson Tonight" that there's "no doubt" Biden is "losing his memory and is getting senile."

"I don't think there's any doubt about this," Hume said. "I have traces of this myself. I know what it feels like. Sometimes you're confused, sometimes you can't remember, 'What are you supposed to do the next morning?' -- and I'm not running for president and it's probably a good thing I'm not."

While Americans have certainly gotten used to his gaffes, Hume said his confrontation with a Michigan auto worker over the Second Amendment was surprising.

He also warned Democrats about the risk of Biden as the party's nominee.

"I think that over time, the danger for him [Biden] and for his party is that he may say something that’s so outlandish and so suggestive that his cognitive faculties have failed him, that Democratic voters are going to say, ‘Oh, my Lord, what have we got here?’" Hume said.