Donald Trump is facing “lowered expectations” in tonight’s presidential debate , a political commentator has claimed. Trump will be going head-to-head with US president Joe Biden in a live debate later tonight in the first of two televised debates. Polls show an extremely tight race between the 81-year-old incumbent and the 78-year-old former US president. The debate tonight could be a deciding factor for many Americans when they go to cast their vote. Polls show an extremely tight race between the 81-year-old incumbent and the 78-year-old former US president. The debate tonight could be a dec…