The failed presidential candidate had said earlier that the Orlando tragedy was a factor in his consideration of a second Senate term.
Omar Mateen had a history with the FBI, officials confirmed.
The Florida senator talks to The Advocate about what led to the attack.
Some politicians with antigay records appear genuinely moved.
Trump gets a key winner-take-all state and victories in three others. Marco Rubio ends his campaign, and John Kasich gets his first win.
Either Donald Trump will win, or no one will win the Republican primary outright.
The entire GOP primary might be about beliefs no one is willing to talk about.