The Republican presidential candidates did not hold back during their second GOP primary debate Wednesday night.
Whether they were discussing climate change or defunding Planned Parenthood, the night was full of sharp one-liners.
Watch the video above.
CNN GOP Debates Sept. 16, 2015
(01 of15)
Carly Fiorina, former chairman and CEO of Hewlett-Packard Co. and 2016 Republican presidential candidate, left, and John Kasich, governor of Ohio and 2016 Republican presidential candidate, participate in the Republican presidential debate at the Ronald Reagan Presidential Library in Simi Valley, California, on Sept. 16, 2015. (credit:Max Whittaker/Pool/Bloomberg via Getty Images)
(02 of15)
Sen. Marco Rubio (R-Fla.), a 2016 presidential candidate, participates in the Republican presidential debate at the Ronald Reagan Presidential Library in Simi Valley, California, on Sept. 16, 2015. (credit:Max Whittaker/Pool/Bloomberg via Getty Images)
(03 of15)
Republican presidential hopeful Ben Carson speaks during the Republican presidential debate at the Ronald Reagan Presidential Library in Simi Valley, California on Sept. 16, 2015. (credit:Frederic J. Brown/AFP/Getty Images)
(04 of15)
Republican presidential candidates (L-R) Jeb Bush, Scott Walker and Carly Fiorina during the Republican presidential debates at the Reagan Library in Simi Valley on Sept. 16, 2015. (credit:Sandy Huffaker/Getty Images)
(05 of15)
Republican presidential candidates (from left) Ohio Gov. John Kasich and New Jersey Gov. Chris Christie walk onstage with other candidates during the Republican presidential debates at the Reagan Library in Simi Valley on Sept. 16, 2015. (credit:Sandy Huffaker/Getty Images)
(06 of15)
Republican presidential candidate Lindsey Graham speaks during the presidential debates at the Reagan Library on Sept. 16, 2015, in Simi Valley, California. (credit:Justin Sulliva/Getty Images)
(07 of15)
Republican presidential candidate Bobby Jindal speaks during the presidential debates at the Reagan Library on Sept. 16, 2015, in Simi Valley, California. (credit:Justin Sullivan/Getty Images)
(08 of15)
Republican presidential candidates, (L-R) former New York Gov. George Pataki, former Sen. Rick Santorum (Pa.), Louisiana Gov. Bobby Jindal and U.S. Sen. Lindsey Graham (S.C.) stand onstage during the presidential debates at the Reagan Library on Sept. 16, 2015, in Simi Valley, California. Fifteen Republican presidential candidates are participating in the second set of Republican presidential debates. (credit:Justin Sullivan/Getty Images)
(09 of15)
Republican presidential candidates George Pataki (L) and Rick Santorum take part in the presidential debates at the Reagan Library on Sept. 16, 2015, in Simi Valley, California. Fifteen Republican presidential candidates are participating in the second set of Republican presidential debates. (credit:Justin Sullivan/Getty Images)
(10 of15)
Republican presidential candidates, (L-R) George Pataki, Rick Santorum, Bobby Jindal and Lindsey Graham stand onstage during the presidential debates at the Reagan Library on Sept. 16, 2015, in Simi Valley, California. (credit:Justin Sullivan/Getty Images)
(11 of15)
Republican presidential candidate Ben Carson responds to questions from reporters as he enters the press room at the Ronald Reagan Presidential Library in Simi Valley, California, on Sept. 16, 2015, ahead of the Republican presidential debate. (credit:Frederic J. Brown/AFP via Getty Images)
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Photos of Donald Trump, president and chief executive of Trump Organization Inc. and 2016 Republican presidential candidate, not pictured, and Jeb Bush, former governor of Florida and 2016 Republican presidential candidate, not pictured, are seen on podiums past Air Force One during a walk-through ahead of the Republican presidential debate at the Ronald Reagan Presidential Library in Simi Valley, California, on Sept. 16, 2015. The main debate of the top 11 GOP contenders in the polls follows the "kids' table" debate of candidates who didn't make the cut. (credit:Patrick T. Fallon/Bloomberg via Getty Images)
(13 of15)
Homemade cupcakes decorated with the names of the candidates are seen ahead of the Republican presidential debate at the Ronald Reagan Presidential Library in Simi Valley, California, on Sept. 16, 2015. The main debate of the top 11 GOP contenders in the polls follows the "kids' table" debate of candidates who didn't make the cut. (credit:Patrick T. Fallon/Bloomberg via Getty Images)
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A photographer takes a picture of the stage before the start of the CNN Republican Presidential Debate at the Ronald Reagan Presidential Foundation and Library on Sept. 16, 2015, in Simi Valley, California. Republican presidential candidates are set to square off in the CNN Republican Presidential Debate. (credit:Justin Sullivan/Getty Images)
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Journalists wait in the Spin Room at the Ronald Reagan Presidential Library in Simi Valley, California, on Sept. 16, 2015, ahead of the Republican presidential debates. (credit:Frederic J. Brown/AFP via Getty Images)
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