Exclusive photos from the Fox Business 2016 GOP primary debates

Ohio Gov. John Kasich looks on as New Jersey Gov. Chris Christie gestures following the primetime FBN Republican presidential debate. (Fox News)

Donald Trump speaks during the Fox Business primetime debate. (Fox News)

Ted Cruz gestures as he speaks during the debate. (Fox News)

Former Gov. Jeb Bush, R-Fla., speaks during the debate. (Fox News)

Businessman Donald Trump speaks with Marco Rubio and Jeb Bush. (Fox News)

Retired neurosurgeon Ben Carson speaks during the debate. (Fox News)

Donald Trump speaks during the FBN Republican presidential debate. (Fox News)

Ted Cruz speaks during the FBN 2016 Republican presidential debate. (Fox News)

Businessman Donald Trump responds during a row with Ted Cruz at the debate. (Fox News)

Ted Cruz spars with Donald Trump during the FBN Republican presidential debate. (Fox News)

Ohio Gov. John Kasich waves to the audience in North Charleston, S.C. (Fox News)

Florida Sen. Marco Rubio walks to his podium. (Fox News)

Fox Business Network's Neil Cavuto and Maria Bartiromo speak before the FBN 2016 Republican presidential debate. (Fox News)

Mike Huckabee talks to the press after the debate. (Fox News)

The candidates from the early debate stand together on stage. (Fox News)

Mike Huckabee answers a question as Carly Fiorina and Rick Santorum listen during the early FBN Republican presidential debate. (Fox News)

Carly Fiorina listens as former Sen. Rick Santorum, R-Pa., responds to a question. (Fox News)

Former Arkansas Gov. Mike Huckabee makes a point during the early FBN debate. (Fox News)

Former Pennsylvania Sen. Rick Santorum responds to a question during the early FBN debate. (Fox News)

Moderator Sandra Smith asks a question during the early FBN Republican presidential debate. (Fox News)

Former Pennsylvania Sen. Rick Santorum responds to a question during the early Republican debate. (Fox News)

Carly Fiorina and former Sen. Rick Santorum, R-Pa., walk onstage before the early debate. (Fox News)

Debate moderator and "Intelligence Report" host Trish Regan walks on-stage before the debate. (Fox News)

An aerial view of the North Charleston Coliseum's hall. (Fox News)

Former Gov. Mike Huckabee's, R-Ark., debate lectern. (Fox News)

Republican National Committee Chairman Reince Priebus speaks with Fox Business' Neil Cavuto. (Fox News)

The stage is set for the Fox Business 2016 Republican presidential primary debate in North Charleston, S.C. (Fox News)