On Americas Newsroom, the Florida senator explains why hes very optimistic about taking states with big delegate counts. Rubio Trump, Cruz underperformed on Super Tuesday.
Sen. Marco Rubio, speaking to supporters in Miami, vowed to continue his campaign after a disappointing Super Tuesday, and launched several barbs at . Super Tuesday delivered some super punchlines for GOP candidates still in the race. Here are some of the highlights from Donald Trump, Ted Cruz and Marco .
