Trump in need of a game-changing moment as he meets Joe Biden for final debate - CNN

In CNN's Poll of Polls, Biden is leading Trump by 10 points nationally and he is also showing considerable strength in the key battleground states of Pennsylvania, Michigan and Wisconsin where Trump won by narrow margins in 2016.

One adviser said Trump needs a "leadership moment" at the debate as Biden is now seen as the front-runner heading into the final stretch of this campaign.

Trump won those voters by 30 points in 2016, but he currently holds only a 19-point margin within that demographic, according to an analysis by CNN's Harry Enten.

Biden, who was born in Scranton, Pennsylvania, has proven to be a more formidable adversary than Clinton when it comes to those voters -- one of the reasons why he is faring better in Midwestern states than the 2016 Democratic nominee.

To bolster his standing, Trump's advisers hope he will be laser-focused on the economy, an area where he has traditionally held a clear advantage over Biden.