text:  I'm Monica Ricks. A new CBS News poll finds many Democrats are losing confidence in President Biden now following his dismal debate performance. The numbers don't look good, says Jennifer DiPinto, CBS's Deputy Director of Elections and Surveys. For months, voters have expressed doubts about whether President Joe Biden has that cognitive health to serve as president. And now those doubts have grown. After the debate, nearly three-quarters of the electorate, 72 percent of voters, don't think he has that cognitive health. And that includes...