 And our national poll shows even after that disastrous debate, the president remains locked in a dead heat with Trump, 46 to 47. But as pressure grows on Biden to drop out, tonight ABC News has confirmed that his campaign has started to privately survey voters to see how Vice President Kamala Harris would do if she were the one to take on Trump. With Biden under fire, Harris has been his relentless defender on the campaign trail, today appearing in Battleground, North Carolina.