Today, US Vice President Kamala Harris and former President Donald Trump will be facing off on stage for the first time for their presidential debate. The encounter that will be taking place in Philadelphia on Tuesday evening has been highly anticipated ever since Trump’s debate with President Joe Biden, whose unusually poor performance paved the way for him to drop out of the race. What can people expect this time, with a new Democratic candidate from the same administration debating a seasoned and often ruthless presidential debater with a history of rattling his opponents with unexpected ja…