According to local10.com, Incumbent Marco Rubio won back his seat in the Florida Senate with 52% of the vote versus his opponent's, Patrick Murphy's, 44%. After losing his home state in the Presidential primary to Donald Trump, Rubio said he would not seek re-election to the U.S. Senate,  but changed his mind early June. Murphy has criticized Rubio for endorsing Trump despite calling him a con man during the Presidential primary. Murphy received endorsements from both Hillary Clinton and President Obama, but it was not enough to overtake the incumbent.
http://www.local10.com/news/elections/marco-rubio-defeats-murphy-reelected-to-us-senate