 A growing number of Senate Democrats are also raising doubts about the president's fitness to run again. He's set to speak with black lawmakers to shore up their support, and he begins hosting the NATO summit here in Washington. The eyes of the world will be on him. We now have a new CBS News poll. While the presumptive nominees are functionally tied in our national poll, it shows a shift towards former President Trump. Now, our last poll had President Biden leading very slightly. The president was also ahead in battleground states in the last poll.