The 2016 presidential campaign of Marco Rubio, who is currently the senior United States senator from Florida, was formally announced on April 13, 2015, at an event at the Freedom Tower in Downtown Miami. Early polling showed Rubio, who was considered a potential candidate for Vice President by Republican presidential nominee Mitt Romney in 2012, as a frontrunner candidate for the Republican nomination for president of the United States in 2016 since at least the end of the 2012 election. Rubio was the second Cuban American to run for president of the United States, with Republican Ted Cruz announcing his campaign three weeks earlier. He suspended his campaign on March 15, 2016, after finishing second in Florida's primary.