'Huck' is a political veteran and has run for president before, winning the Iowa Caucuses in 2008 and finishing second for the GOP nomination behind John Mc Cain.
She is also the only woman in the 2016 GOP field, making her the one Republican who can't be accused of sexism.
Fiorina's unceremonious firing by HP's board has led to questions about her management and leadership styles.
Noelle Bush has made news with her struggle with drug addiction, and related arrests. That includes the post-9/11 criminal prosecutions of terror suspects that made his reputation as a hard-charger.
Christie is often accused of embracing an ego-driven and needlessly abrasive style.
(The bill moved forward as written.) He has called for the complete repeal of the medical insurance overhaul law, and also for a dismantling of the Internal Revenue Service. Cruz's father Rafael, a Texas preacher, is a tea party firebrand who has said gay marriage is a government conspiracy and called President Barack Obama a Marxist who should 'go back to Kenya.' Cruz himself also has a reputation as a take-no-prisoners Christian evangelical, which might play well in South Carolina but won't win him points in the other early primary states and could cost him momentum if he should be the GOP's presidential nominee. Former chairman of the Republican National Committee. A social-conservative crusader, he is loathed by the left for championing the state law that established 24-hour waiting periods for abortions.