Everybody knows that Ron Paul is a doctor from Texas. Born in Pittsburgh in 1935, he graduated from Gettysburg College and Duke University's medical school. He was a flight surgeon in the Air Force. His wife's name is Carol. He has served as a Republican congressman for years and years.
Everybody knows that Paul has made bids for the presidency three times — as a Libertarian in 1988 and as a Republican in 2008 and this time around. And everybody knows he lost the first two.
Newt Gingrich was in his 20s when he was hired at West Georgia College as a history professor. He had just returned from Belgium, where he was doing research for his doctoral dissertation.
"He was very much a person of intellect," says Mel Steeley, who taught history at the college for four decades and helped bring Gingrich to the school in 1970. "He would wander across campus and didn't notice people. He'd have something in his mind, always be thinking about something. When he first came, you kind of wondered if he was a student or a professor."
Presidential candidate Rick Santorum consistently polls near the bottom of the Republican pack. But he appears undeterred in his bid for the White House. Santorum's work life in his 20s provides some insight into why he perseveres despite long odds.
The former senator from Pennsylvania is best known for his conservative social positions, especially his opposition to abortion rights and gay marriage. He's also known for expressing what he thinks very frankly.