text:  ABC News, I'm Dave Packer. President Biden resisting calls to step down from the presidential race. President Biden back on the campaign trail, trying to turn the page on Thursday's debate. The president in North Carolina on Friday, acknowledging his rough performance, but vowing to fight on. I don't speak as smoothly as I used to. I don't debate as well as I used to. But I know what I do know. I know how to tell the truth. Yes!