There were many but this was the coup de grace:
At every moment in this short, intense campaign Kamala Harris has risen to the occasion. During the weeks of agony as President Biden and the party debated whether he could continue his campaign, she kept her head down giving him space to make his decision. But when he endorsed her moments after announcing his withdrawal from the race, she hit the ground running. Her rollout, including the choice of Tim Walz as her running mate, is widely accepted as one of the best in American political history. Her speech at the DNC was flawless. The debate last night was a home run.
She. Is. Good. Very, very good. It’s clear that she not only has good instincts, she learns from her mistakes and moves forward with confidence. She is a mature, experienced politician with a warm and engaging personality. That’s rare.
The Democrats are lucky to have her.