CHICAGO (NewsNation Now) — President Donald Trump spent the day before the final presidential debate with former Vice President Joe Biden stumping in a state he won comfortably four years ago, but where NewsNation’s most recent polling of North Carolina voters says the race is a dead heat this time around.

The president was campaigning tonight in Gaston County, North Carolina — which he won by a two-to-one margin in 2016 at 64-32. Recent polls suggest he will need a big turnout of supporters on election day there, and elsewhere, to scale the changing electoral landscape of 2020.

That’s because some key states he won easily now appear to be up for grabs, according to the most recent polling.

An Emerson College survey of likely voters in Iowa out Wednesday has the president up by just two points in a state he won by nine in 2016. Georgia, which he won by five points four years ago is now a statistical dead heat at 48-47. And North Carolina, which the president won by 3.6 points in 2016 is now an actual dead heat at 48.9-48.9.

Democratic Vice Presidential candidate Kamala Harris was also in North Carolina Wednesday working the Asheville area, and analyzing the president.

“He’s got this weird obsession with wanting to get rid of whatever President Obama and Vice President Biden created,” said Harris. “it’s just this weird obsession, right?”

Former President Barack Obama campaigned for Biden Wednesday in Philadelphia, a key Democratic party stronghold where he urged people to get out and vote. It was his first stop during the General Election stretch run.

Biden remained at home preparing for Thursday’s debate. 

That debate is already the subject of presidential complaints — specifically that it is mostly on domestic issues instead of what the White House thought was supposed to be an exchange on foreign policy. Also the addition of that a mute button which could cut off a participant’s microphone if the debate guidelines are violated.