The former U.S. senator from Pennsylvania said he was endorsing Marco Rubio for the GOP nomination.
In a call with her campaign donors, Fiorina noted that she tied Jeb Bush in Iowa despite his huge spending.
The Florida senator's strong finish in Iowa will likely win him more support, but he will have to keep his momentum going.
As votes were tallied Monday night, Ted Cruz was declared the winner among Republicans while Democrats Clinton and Sanders were locked in a tight battle.
The U.S. senator from Florida commanded the stage at Thursday's GOP debate with powerful rhetoric about how to defeat extremist groups.
The debate in Des Moines unfolded days before the Iowa caucuses Monday, the nation's first nominating contest, and as Republican front-runner Donald Trump decided to boycott the Fox forum.
The "Kelly File" host was quick to push back at the GOP candidates' responses.
Ben Carson said Thursday while he might not have politics on his resume, he has a proven record handling difficult situations.
The GOP presidential hopefuls took the stage Thursday for the final time before Monday's Iowa caucuses.
The former Hewlett-Packard CEO touted her budget plan during Thursday's "undercard" Republican debate.
For the first time since August, former Virginia Gov. Jim Gilmore was back on a debate stage after qualifying for the undercard contest.
The Republican front-runner, feuding with Fox, planned a rally for U.S. military veterans to counter Thursday's GOP debate.
Here are the best drinking game rules to get you through the seventh GOP debate.
How to watch the final debate before the Iowa caucus.
Donald Trump’s main rival, Texas Sen. Ted Cruz, comes in second place in each of the first three voting states.
With Donald Trump sitting out, other Republican presidential hopefuls may get more speaking time at Thursday's event in Iowa.
Fox News anchors Chris Wallace, Megyn Kelly and Bret Baier have been tapped as co-moderators at Thursday's Republican presidential debate.
The Republican front-runner’s camp agreed Wednesday to go one-on-one against the Texas senator, "if he's the last man standing."
Roger Ailes defended the anchorwoman Tuesday after Republican front-runner Donald Trump said he would skip Thursday's GOP debate.
After the GOP front-runner made his announcement, rival Ted Cruz challenged him to a one-on-one showdown.
CARLY for America helps out at campaign events, thanks to vague and unenforced FEC rules about coordination.
Texas Sen. Ted Cruz and Donald Trump stood out and traded insults Thursday night, while Chris Christie and Marco Rubio turned in strong debate performances.