Florida Senator Marco Rubio on Monday said that he will run for the US presidency, a media report said.
Rubio told his supporters that he feels "uniquely qualified" to be president and criticised Democratic presidential candidate Hillary Clinton as "a letter from yesterday", Xinhua reported.
The 43-year-old Republican is also set to hold a rally Monday evening at Miami, Florida.
Elected in 2010 with Tea Party support, Rubio is now the third Republican candidate in the race, following Texas Senator Ted Cruz and Kentucky Senator Rand Paul. His announcement comes the day after Clinton made her long-awaited entry into the race.
Analysts believe that Rubio "doesn't fit the typical Republican stereotype of being an old white Republican", and "has the opportunity to connect with voters through his own story".