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Republican presidential candidates (L-R) Rick Santorum, U.S. Sen. Rand Paul (R-KY), Mike Huckabee, U.S. Sen. Marco Rubio (R-FL) , U.S. Sen. Ted Cruz (R-TX),  Ben Carson, Donald Trump, Jeb Bush and Wisconsin Gov. Scott Walker stand onstage during the presidential debates at the Reagan Library on September 16, 2015 in Simi Valley, California.
Republican presidential candidates (L-R) Rick Santorum, U.S. Sen. Rand Paul (R-KY), Mike Huckabee, U.S. Sen. Marco Rubio (R-FL) , U.S. Sen. Ted Cruz (R-TX),  Ben Carson, Donald Trump, Jeb Bush and Wisconsin Gov. Scott Walker stand onstage during the presidential debates at the Reagan Library on September 16, 2015 in Simi Valley, California.

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    Did the GOP debate sway undecided voters?

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Did the GOP debate sway undecided voters?

Republican presidential candidates had their second debate, but did any of the candidates grab the attention of undecided voters in Iowa? CNN's Randi Kaye reports.

Did the GOP debate sway undecided voters?

Republican presidential candidates had their second debate, but did any of the candidates grab the attention of undecided voters in Iowa? CNN's Randi Kaye reports.