Trump suddenly looks very old and very tired and incoherent. He has always been that way these last two years but it was no big deal because Biden looked older, more tired and just as incoherent. This is why they are worried suddenly. The contrast will be stark.
Also, she is going to actually be able to do interviews and multiple campaign rallies daily. Even more important, the Democrats have all the attention and eyes for the first time in Trump’s political existence since 2015 and there is nothing that will reset that for the next four weeks.
She also is already having the entire base rally to supporter her at levels higher than Hillary saw (no Bernie effect). The youth and minority votes are getting fired up as are the women.
Things are going to be really interesting the ways the Dems have shockingly got their chit together. Let’s see how her VP pick works out.
Honestly, if you are a conspiracy theorist, you would wonder if this was not all planned.