Republican presidential candidate Sen. Ted Cruz is joined by former Hewlett-Packard CEO Carly Fiorina during a rally in Indianapolis on Wednesday. Cruz announced he has tapped Fiorina to serve as his running mate. Michael Conroy/AP hide caption

toggle caption Michael Conroy/AP

Republican Chris Christie of New Jersey has invested nearly his entire campaign on New Hampshire. A poor result will almost certainly effectively end his candidacy. Robert F. Bukaty/AP hide caption

toggle caption Robert F. Bukaty/AP

Republican presidential candidate Carly Fiorina walks the streets of Manchester, NH with Mayor Ted Gastas. Gastas has also campaigned with three other GOP candidates this year. Brady Carlson/New Hampshire Public Radio hide caption

toggle caption Brady Carlson/New Hampshire Public Radio

Meet The N.H. Mayor Presidential Candidates Want To Knock On Doors With

  • Download
  • <iframe src="https://www.npr.org/player/embed/449262339/449417514" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Republican presidential candidate, businesswoman Carly Fiorina speaks during the CNN Republican presidential debate at the Ronald Reagan Presidential Library and Museum on Sept. 16, 2015. Mark J. Terrill/AP hide caption

toggle caption Mark J. Terrill/AP

Fiorina As CEO: 'Colossal Failure' Or 'The Right Leader'?

  • Download
  • <iframe src="https://www.npr.org/player/embed/443409390/443691954" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Republican presidential hopefuls, retired neurosurgeon Ben Carson and real-estate mogul Donald Trump talk about childhood vaccines during the second Republican presidential debate. Frederic J. Brown/AFP/Getty Images hide caption

toggle caption Frederic J. Brown/AFP/Getty Images

Fact Check: Fiorina's HP Record; Trump's Bankruptcies; Vaccines And Autism

  • Download
  • <iframe src="https://www.npr.org/player/embed/441032753/441063299" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript