From the New York Times Editorial Board:
It is hard to imagine a candidate more unworthy to serve as president of the United States than Donald Trump. He has proved himself morally unfit for an office that asks its occupant to put the good of the nation above self-interest. He has proved himself temperamentally unfit for a role that requires the very qualities — wisdom, honesty, empathy, courage, restraint, humility, discipline — that he most lacks.
Those disqualifying characteristics are compounded by everything else that limits his ability to fulfill the duties of the president: his many criminal charges, his advancing age, his fundamental lack of interest in policy and his increasingly bizarre cast of associates.
This unequivocal, dispiriting truth — Donald Trump is not fit to be president — should be enough for any voter who cares about the health of our country and the stability of our democracy to deny him re-election.
For this reason, regardless of any political disagreements voters might have with her, Kamala Harris is the only patriotic choice for president.