I believe that Trump doesn't look that much far ahead of Biden, even if he is in most polls I see him only edging out Biden, and that's polls, we are talking about something that will not be all that easy to handle for Trump when it comes to elections because people still remember him. The more he talks, the more enemy he makes and that's the most important part, dude is not someone who inspires devotion, he is just a guy who republicans think could win against Biden, and nobody else had that shot, so that's why they picked him.
This doesn't mean he won't win, of course he could, that's the only reason he is nominated, but at the same time Biden is not the reason why people vote for him, Biden is "not trump" option that 80+ million, a USA history record breaking number of people voted for Biden.
I kind of disagree with you when you say Trump is a personality who does not inspire devotion among Republican voters. In reality, an important percentage of people who identify themselves as part of the MAGA movement have shown some characteristics which are typical of people who are involved or trapped inside a cult or a very shady religious organization. In the case being Donald Trump the Leader of such cult.
Even though they could be biased, I have taken some time to see left wing media interviewing Trump supporters and there are some of them who have said very wacky things, like Trump being directly appointed by God himself/Jesus to direct the United States into an era of prosperity and glory, how also they blindly support the massive deportation of people from the country, among other things.
Perhaps, you have not realized it yet, but I am quite sure Trump is counting on those "cult-ish" followers to win next November, because they are willing to vote for him no matter the indictments, the results of civil prosecutions or the retention of super secret documents inside his home in Mar-a-lago.
Things with Trump sound a lot, the guy can be very arrogant and can do things in a very grotesque way, but seeing the current situation in the USA things can be very different, we are people who have always seen that the United States does not He is very happy with Biden because he has done many things that may be very different from what they are looking for, but I know that the American, the native, does not like the situation, neither the immigration nor the Economic situation , the situation they have with a very high inflation, then they want to change that, but they see that with Biden it is not possible, so given these things it is not possible to generate more progress, more development, then a Trump arrives with an aggressive attitude, but with a lot of patriotism and in part that is What the American likes, Trump can be whatever, but I'm seeing through the news that he raises the masses a lot and they follow him, I don't know , but that's how it is , I only see and say what I have seen in almost all the Newscasts.
So I wonder if you didn't like it during Trump's previous term, then why do you like it now? This is something I don't see well, however when we see and Analyze things , I see that TRUMP is a Person who manifests the radicality of things, the Radicalization of a capitlism , the radicalization of migratory processes, the radicalization of wars , and this is partly because Americans like to see power, that they have power on a global level, China is already getting very close to them, China has great development, and this at a political and economic level and these things make that a country like the USA is affected, then I consider that the USA has many Flaws, according to people who are there, people who speak on the news, so all this seems confusing to me, if the election were today? who will win then? because I go if Trump wins today.