It didn't happen.
What happened was that voter turnout is normally calculated by the number of ballot cards cast by the number of registered voters. Since there were so many amendments up for vote in Florida this year, the ballot was two sheets long. So now St. Lucie's report shows voter turnouts that are double what the actual number is. So they counted sheets, not voters, a clerical issue not a conspiracy. If the reporter here had bothered to read page 3, they could see that the number of votes in the presidential race is around a 70% turnout rate.
Please learn to read, all of you.