Sen. Marco Rubio is the kind of candidate who can help the Republican Party diversify its base of support: he's young and a telegenic Hispanic. The first-term Floridian senator was seen as the next big thing in the GOP - until he took a leading role in passing comprehensive immigration reform in the Senate. Conservatives turned on him and the son of Cuban immigrants has since struggled to recapture the spotlight, even though he walked back his support of a path to citizenship.
Regardless of the challenges he faced with conservatives, Rubio decided to run for president. He launched his campaign from Miami with an underlying message that he represents a new generation of leaders - a knock to challenger Jeb Bush and potential challenger Hillary Clinton.
Rubio often tells the story of his family as an inspiration for his public service. "They never made it big, but they were successful," he said of his parents in his announcement speech. "Two immigrants with little money or education found stable jobs, owned a home, retired with security and gave all four of their children a life better than their own. My parents achieved what came to be known as the American dream."
Rubio, who sits on the Senate Foreign Relations Committee, has emphasized his foreign policy credentials since entering the race, an area seen as a weakness among other Republican challengers. He has taken a hawkish stance on issues of national security and is a strong critic of the Iran deal and Obama's opening relations with Cuba. Rubio's campaign has weathered the unexpected twists and turns of the race and retains support in the polls and from donors heading into the primary season.
Rubio has won only one state, Minnesota, so far in the primary contest. He is trailing behind Donald Trump and Ted Cruz in delegates, a determining factor necessary to clinch the nomination. But the senator is undeterred, telling supporters that he will win his home state of Florida.