The investigation into suspicious packages sent to Democratic figures, prominent party supporters and CNN this week is focusing on Florida, law enforcement sources told The Post on Thursday. At least some of the 10 parcels, containing apparent pipe bombs, appear to have been sent from the Sunshine State, according to the Wall Street Journal. “It appears most of them if not all of them have gone through the mail,” an official told the paper. The parcels have been sent to former President Obama, former Vice President Joe Biden, Hillary Clinton, Rep. Maxine Waters, former Attorney General Eric Holder, Democratic donor...