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.
Bernie Sanders Bernard Sanders (born September 8, 1941) is an American politician who has been the junior United States Senator from Vermont since 2007. Sanders is the longest serving independent in U.S. congressional history. Since his election to the House of Representatives in 1990, he has caucused with the Democratic Party, which has entitled him to congressional committee assignments and at times given Democrats a majority. Sanders became the ranking minority member on the Senate Budget Committee in January 2015; he had previously been chair of the Senate Veterans' Affairs Committee for two years.