ONE-ON-ONE WITH JD VANCE.

WHIT JOHNSON (ABC NEWS) (Off-camera) Good evening. Thanks for joining us on this Saturday. I'm Whit Johnson. We begin with the race for the White House. Vice President Kamala Harris and her running mate, Minnesota Governor Tim Walz, wrapping up their campaign swing through battleground states tonight in Las Vegas, this as polls showed the duo appearing to gain ground in some key swing states. Harris slamming former President Donald Trump on immigration and abortion. Trump's running mate, JD Vance, sitting down for an interview with our Jonathan Karl, insisting he would be ready to be president on day one. [ABSTRACT FROM PUBLISHER]