We don’t need medical tests. We don’t need Joe to drop out. We needn’t worry about him making it 4 years in office.
There is this thing called a “presidential ticket” which I thought was a widely known fact. But since many people don’t seem to know about it I’ll lay it out carefully. It means the Vice Presidential election is linked to the Presidential Election. This means should we elect Joe Biden to President, then Kamala Harris will be the Vice President. The Vice president takes over should the President die in office, step down, or if the Cabinet needs to invoke the 25th Amendment. Hence, you should have no worry whether Joe Biden can complete his term, because Kamala Harris will be ready to take over.
This means there is no point to replacing Joe Biden with Kamala Harris before the election. She is already slated to take over should Biden need her to.
As for Biden being somehow unelectable, I have seen no data to support that conclusion. In fact most data I have seen puts him in a more favorable position than any other democrat. So if you want to replace Biden you need to explain why your idea is correct even when what polling we have suggests everyone is in the margin of error of each other. Furthermore, switching candidates is highly risky as any ballot switch will be contested in court and ultimately decided by a heavily biased Supreme Court. So you need to explain, with data, that your idea is worth the risk of a replacement being denied being on the ballot in critical states.
I really don’t care what you would “prefer” and I really don’t care what your assessment of Biden is. At the debate Biden was able to make factual statements and answer the questions being asked. The other guy was clearly divorced from reality or a compulsive liar (or both). If you prefer crazy with strong delivery over reality based but poor delivery, then I don’t know what to tell you.
I’m going with the guy who tells the truth, has proven to work for the people, has a clearly better judgement than his opponent, has a great Vice President, is polling just as well as any other Democrat, and is already on the ballot in all 50 states with no danger of being removed from the ballot.