Donald Trump followed up Thursday’s presidential debate with a rally on Friday, but onlookers complained that he slurred his way through the speech. President Joe Biden was highly criticized for his debate performance, which caused some — including the Editorial Boards of the Raw Story and the New York Times — to suggest that he should drop out of the race. Trump himself criticized Biden’s lack of clarity during the debate, but then appeared to mess up his own words at his Virginia rally. Want more breaking political news? Click for the latest headlines at Raw Story. ALSO READ: Rep. Byron Do…