Congressman Ron DeSantis Florida Supporters, Detractors Say Rubio Has To Prove He Wants His Senate Job By Tori Whitley • Jun 24, 2016 Scott Olson/Getty Images Senator Marco Rubio, R-FL, is running for reelection to the U.S. Senate. It's a reversal from what the senator has been saying for months. Now, both the senator's supporters and detractors say he has to prove he wants the job. Take A Look At Florida's Crowded U.S. Senate Race By Kate Payne • Apr 29, 2016 Bjoertvedt via Wikimedia Commons The race for Florida’s open U.S. Senate seat is crowded with contenders from both parties. Here's a look at some of the better-known candidates.