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.
The various investigations into Russia will not be hindered by any tweets or statements from the president, Sen. Marco Rubio said on Sunday's "Meet The Press."
"Suffice it to say I don't have any basis, I've never heard that allegation made before by anybody," Rubio told "Meet the Press."
Video
Rep. Jason Chaffetz, Sen. Marco Rubio, and other Republicans weigh in on whether Attorney General Jeff Sessions should recuse himself for misleading t
Video
Senator Marco Rubio asks Secretary of State nominee Rex Tillerson whether he considers the Russian President to be a war criminal. He also asks whethe
Sen. Marco Rubio will win reelection, NBC News projects, defeating Democratic Rep. Patrick Murphy.
Two high-profile U.S. senators, Marco Rubio and Pat Toomey, disputed Donald Trump's warning that the Nov. 8 presidential election might be "rigged"
As voters head to the polls Tuesday, Democrats of all stripes are relieved to see the end of an awkward primary for the state's open Senate seat.
The AFL-CIO is making its first foray into 2016 Senate races Thursday with a six-figure digital ad buy in six key races, officials told NBC News.
Organizers of the stop-Trump effort held their second weekly conference call Sunday night.
Marco Rubio, Trump's former rival for the GOP nomination, says he would fight two of Trump's most controversial policy proposals in the Senate.
The "Marco 2016" t-shirts you'd consigned to the dustbin are ready for their second act, folks!
If he loses -- either in the August GOP primary or in the general election -- it could damage his viability for another presidential run.
The decision is a boon for Republicans concerned about losing their majority in the Senate.
Signs suggest the Florida Senator is moving towards reelection, a reversal of his past statements committing to retire at the end of his term.
After brutal name calling and low blows, it appears Marco Rubio and Donald Trump have called a truce, of sorts.
Former Republican hopeful Marco Rubio offered a glimpse of his future on Monday — and it appears to involve a lot of working out.
"My policy differences and reservations about Donald's campaign are well-established. I've said them often, and I stand by those, those remain."
Video
With a starting field of 22 candidates, the 2016 campaign has featured a variety of drop-out strategies.
A month after suspending his campaign, Rubio has an impressive 10 percent of delegates awarded so far — but he's starting to lose some to Ted Cruz.
