Primary Election Candidates
When Hillary Clinton was elected to the U.S. Senate in 2001, she became the first American first lady to ever win a public office seat. She later became the 67th U.S. secretary of state in 2009, serving until 2013.
Most recent position: 67th U.S. Secretary of State
Education: Yale Study Center, Wellesley College, Yale Law School
State: New York
Young Republican politician Marco Rubio won an impressive victory in his 2009 campaign for one of Florida's seats in the U.S. Senate.
Most recent position: U.S. Senator from Florida
Education: Tarkio College, University of Miami, University of Florida
Ben Carson overcame his troubled youth in inner-city Detroit to become a neurosurgeon famous for successfully separating conjoined twins. In 2015, he became one of many candidates seeking to gain the official Republican presidential nomination.
Most recent position: Director of Pediatric Neurosurgery, Johns Hopkins Hospital
Education: Yale University, University Of Michigan Medical School, Johns Hopkins University
Republican politician Ted Cruz took office as the junior U.S. Senator of Texas in 2013 and is running for the 2016 presidential election.
Most recent position: U.S. Senator from Texas
Education: Harvard Law School, Princeton University
Born May 13, 1952 in McKees Rock, Pennsylvania, John Kasich was the son of parents who worked for the post office. He spent his formative years in that community, taking an active role in his high school and local church.
Most recent position: Governor of Ohio
Education: Ohio State University
Third Party Candidates
Stein ran for president once before, in 2012, raising just under $900,000 and garnering about 456,000 votes, less than one-half of 1 percent of the total votes cast. Stein's previous political experience included two unsuccessful runs, as a Green Party nominee, to be governor of Massachusetts.
Party: Green Party
Most recent position: Co-Founder, Massachusetts Coalition for Healthy Communities
Education: Harvard University, Harvard Medical School
Gary Johnson is the former two-term Republican governor of New Mexico. He won the governorship in 1994 as an upstart Republican candidate, making a name for himself over the course of his time in office as a libertarian-minded conservative. He’s been active in libertarian causes, including marijuana legalization, since leaving office and is an accomplished athlete.
Party: Libertarian Party
Most recent position: Governor of New Mexico
Education: University of New Mexico
State: New Mexico