Marco Rubio presidential campaign, 2016 declared he was running for president approximately three weeks after this fellow republican who has served  as the junior United States Senator from Texas since what year
Ted Cruz Rafael Edward Cruz ( ; born December 22, 1970) is an American politician and attorney who has served as the junior United States Senator from Texas since 2013. He was a candidate for the Republican nomination for President of the United States in the 2016 election.
Rick Santorum presidential campaign, 2016 The 2016 presidential campaign of Rick Santorum, former United States Senator from Pennsylvania, was formally announced at a rally in Pittsburgh on May 27, 2015. His campaign for the Republican nomination for President of the United States in 2016 was his second bid for the office, after having been a candidate in 2012, where he received the second most delegates after 2012 nominee Mitt Romney.