WASHINGTON (AP) — Most of the two dozen White House hopefuls have pre-existing friendships from their time on Capitol Hill or other Democratic circles.
But few are as complex — and potentially awkward — as the tie between Kamala Harris and Joe Biden.
They've bonded over their deep love of Beau Biden and a sadness over his loss that lingers four years after his death.
On Thursday, Harris marked the fourth anniversary of his death by tweeting a photo of herself with Beau Biden, saying "you couldn't find a person who cared more deeply for his family, the nation he served, and the state of Delaware."
Joe Biden thanked her for her "kind remembrance" of his son.
But signs of tension that could strain the relationship have already surfaced as they both seek the Democratic presidential nomination.