My mom is in her 70's and is an old school republican. Grew up during the era of dixiecrats. Military wife. Pretty much the old republican bread and butter. Trump drove her away from the republican party, she held her nose and voted for Hilary and Biden, but that was more a vote against Trump than anything else. Kamala has hit my mom differently. She's genuinely excited to vote for her. Not about voting against Trump, she just outright likes Kamala, in a way she definitely did not like Hilary or Biden. She finds her "Say it to my face" and "I know your type" quips hilarious, and when I visited her today, she was watching youtube clips of Kamala's speeches the entire time.
Which is all to say that I feel it when people say this enthusiasm for Kamala is real, it's not just a honeymoon period. My mom isn't that reactionary, she can be pragmatic but she doesn't fake enthusiasm. Seeing old school republicans like her talk about voting for Kamala with actual excitement, not merely as a vote against someone... I never thought I'd see the day. Got me incredibly amped up.