 Most U.S. adults plan to watch some element of this evening's presidential debate, and many think the event will be important for the campaigns of both President Biden and former President Donald Trump. That's according to a new poll from the Associated Press, NORC Center for Public Affairs Research. Both men remain broadly unpopular as they prepare to face off for the first time since 2020, although Trump, the presumptive Republican nominee, maintains a modest enthusiasm advantage with his base,