PHILADELPHIA — It wasn't even three weeks ago when Trish Callahan, a Democrat from Philadelphia, said her co-workers had to check to see if she was OK. Then from the election on July 21, and as the Democratic nominee. “I was preparing myself for the worst," said Callahan, 63, who works in fundraising at Temple University.

"And as soon as Biden stepped down and endorsed Kamala, it was like I was resurrected from the dead. I donated. I volunteered.

" It's been a night-and-day turnaround from the downward vibes of the Biden campaign to . And no scene captured the drastic shake-up as vividly as Harris' raucous rally in Philadelphia Tuesday night . Callahan was among the 14,000 supporters in attendance, the largest crowd of the still-young Harris campaign.

"It's been a bit of a whirlwind," Harris said after taking the stage, before informing the crowd that she officially secured the Democratic nomination Monday night after a virtual roll-call vote of Democratic National Committee delegates. "Now we have work to do. We need to move to the general election and win that.

And we also need to level set," Harris added. "We are the underdogs in this race, but we have the momentum, and I know exactly what we are up against." Waiting for Harris to come out, the boisterous crowd waved back and forth to rap songs and R&B classics like "Dancing in the Street" and "My Girl.

" When Harris and Walz finally arrived, the response was thunderous. It was nothing like the low-key Biden rallies of a.