He never mentioned him by name, but former President Barack Obama made it clear Friday at a rally in Miami’s Overtown that by electing Andrew Gillum governor of Florida, the state can deliver a blow to President Donald Trump.... On Friday, the faithful jammed into a sweltering, cavernous room at Miami’s Ice Palace Film Studios, several attendees wearing Obama T-shirts they said dated to his first run for the presidency in 2008. Gillum’s campaign said more than 4,000 people attended....