Age: 61
Background: Carly Fiorina is a former chief executive of Hewlett-Packard. She was the first woman to lead a Fortune 20 business. Since leaving HP in 2005, she's focused on giving back through a number of charities such as the One Woman Initiative and Good360. She also served as an adviser to Senator John McCain's 2008 presidential campaign.
Stance on hot topics: When it comes to immigration, Carly is vocal about tightening border security before making larger changes to the immigration system. She has stated her support for a path to citizenship for children of illegal immigrants if they graduate from college or serve in the armed forces. Carly does not endorse same-sex marriage, but said she is supportive of granting government benefits to same-sex couples. And unlike other Republican candidates, Carly has not denied human activity as a cause of global warming: she's focused on supporting international treaties to fight climate change.
Memorable quote: "I come from a world outside of politics where track records and accomplishments count, words don't," she said to Fox News earlier this year about her nontraditional background. "If I run for the president, it's because I can win and I can do the job."
Standout moment from 2016 election — so far: In an interview with Rolling Stone, Donald Trump commented on Carly's looks, saying, "Look at that face! Would anyone vote for that? Can you imagine that, the face of our next president? I mean, she's a woman, and I'm not supposed to say bad things, but really, folks, come on. Are we serious?"
Fast-forward to the second GOP debate: Trump and Jeb Bush were talking about Bush’s comments that the government should not spend half a billion dollars on women’s health. Bush said he misspoke, but Donald said he heard him loud and clear. When moderator Jake Tapper asked Carly to respond to Trump’s comments about her looks, she followed up on the Donald/Jeb argument and said, "You know it's interesting to me, Mr. Trump said that he heard Mr. Bush very clearly and what Mr. Bush said. I think women all over this country heard very clearly what Mr. Trump said." *Mic drop*
— Reporting by Marina Liao