Miami Republican Rep. Mario Diaz-Balart of Florida’s 25th Congressional District hasn’t faced a real challenger in a decade. But the last few days indicate that won’t be the case in 2018. It also seems clear that Diaz-Balart’s been caught flat-footed by his new(ish) opponent, former judge Mary Barzee Flores, who exited the Donna Shalala-dominated CD […]