Democrats saw a sight for sore eyes on Wednesday when former President Barack Obama hit the campaign trail in Philadelphia.<br />They see the former president as a key factor in encouraging Black men, Latinos, and younger voters to turn out and vote.<br />CNN reports Obama delivered a blistering account of President Donald Trump's first four years in office.<br />He argued that Trump has proved to be 'incapable of taking the job seriously' and has shown no interest in 'helping anybody but himself and his friends.'<br />Obama suggested Trump uses the presidency to boost his own profile, then noted, 'Even then, his TV ratings are down. So you know that upsets him.'<br />Obama's remarks will undoubtedly anger Trump, who has continued to attack his predecessor even after almost four years removed from his last day in office.