I'm Backing Joe Biden
The debate among Democrats on retaining Joe Biden for President is one of form over substance. It was one bad debate performance which is not the end of the world.
One bad debate is a matter of form. The substance is Joe Biden knows right from wrong, something Trump cannot comprehend. Biden cares about the United States, whereas Trump only cares about himself. With the new Supreme Court ruling on Presidential immunity there would be few checks on Trump’s power should he be elected. Joe Biden has proven himself in the last 3.5 years in office.
That is enough for me.
The only other viable Democrats: Buttigieg and Harris are just not ready, IMHO, for this election.
I’ll stick with Biden.
Other reading: Andy Sylvester put it so well in Why I am sticking with Joe Biden