Republican presidential candidates debate in Milwaukee

Ben Carson talks to the members of the media after the Republican presidential debate at the Milwaukee Theatre.

Ted Cruz talks to supporters after the Republican presidential debate at the Milwaukee Theatre

John Kasich talks to reporters in the spin room after the Republican presidential debate at the Milwaukee Theatre.

Jeb Bush and Donald Trump shake hands after the Republican presidential debate at the Milwaukee Theatre.

Republican presidential candidate Rand Paul speaks during the Republican Presidential Debate in Milwaukee.

Republican presidential candidates Jeb Bush (R) and John Kasich (L) participate in the Republican Presidential Debate in Milwaukee.

Republican presidential candidates John Kasich, Jeb Bush, Marco Rubio, Donald Trump, Ben Carson, Ted Cruz, Carly Fiorina and Rand Paul appear during Republican presidential debate at the Milwaukee Theatre.

Presidential candidate Donald Trump (R) speaks while Sen. Marco Rubio (R-FL) looks on while Donald Trump looks on during the Republican Presidential Debate at the Milwaukee Theatre.

Republican presidential candidate Carly Fiorina speaks during the Republican Presidential Debateat the Milwaukee Theatre.

Jeb Bush, left, speaks as Marco Rubio listens during Republican presidential debate at the Milwaukee Theatre.

Republican presidential candidates John Kasich, Jeb Bush, Marco Rubio, Donald Trump, Ben Carson, Ted Cruz, Carly Fiorina and Rand Paul appear during Republican presidential debate at the Milwaukee Theatre.

Ben Carson laughs during Republican presidential debate at Milwaukee Theatre.

Presidential candidates Ohio Governor John Kasich (L-R), Jeb Bush, and Sen. Marco Rubio (R-FL) take the stage at the Republican Presidential Debate at the Milwaukee Theatre.

Rand Paul speaks during Republican presidential debate at the Milwaukee Theatre.

Republican presidential candidate Ben Carson is seen on a television monitor during the Republican Presidential Debate at the Milwaukee Theatre.

Ted Cruz, left, speaks as Carly Fiorina listens during Republican presidential debate at the Milwaukee Theatre.

Marco Rubio speaks during Republican presidential debate at the Milwaukee Theatre.

John Kasich speaks during Republican presidential debate at the Milwaukee Theatre.

Donald Trump, left, speaks as Ben Carson watches during Republican presidential debate at the Milwaukee Theatre.

Republican presidential candidates John Kasich, Jeb Bush, Marco Rubio, Donald Trump, Ben Carson, Ted Cruz, Carly Fiorina and Rand Paul take the stage during Republican presidential debate at Milwaukee Theatre.

Republican presidential candidates John Kasich, Jeb Bush, Marco Rubio, Donald Trump, Ben Carson, Ted Cruz, Carly Fiorina and Rand Paul take the stage during Republican presidential debate at Milwaukee Theatre.

Presidential candidates Rick Santorum, left, New Jersey Gov. Chris Christie, Mike Huckabee and Louisiana Gov. Bobby Jindal take part in the Republican presidential debate at the Milwaukee Theatre.

Rick Santorum, left, and Chris Christie shake hands as Mike Huckabee approaches after a Republican presidential debate at Milwaukee Theatre.

Republican presidential undercard candidate Bobby Jindal stands with his wife, Jolly, after the debate Milwaukee.

Chris Christie, second from left, speaks as Rick Santorum, left, Mike Huckabee and Bobby Jindal wait during the Republican presidential debate at the Milwaukee Theatre.

Mike Huckabee speaks during the Republican presidential debate. Bobby Jindal is at right.

Chris Christie at the debate at the Milwaukee Theatre.

Rick Santorum speaks during the Republican debate in Milwaukee.

Republican presidential candidates Rick Santorum, Chris Christie, Mike Huckabee and Bobby Jindal during the debate at the Milwaukee Theatre.

Republican presidential candidates Rick Santorum, Chris Christie, Mike Huckabee and Bobby Jindal take the stage.

Journalists work in the filing center before the start of the Republican debate.

A man tries to get debate tickets outside the Milwaukee Theatre.

A worker wipes down a podium before the start of the Republican debate hosted by Fox Business and the Wall Street Journal at the Milwaukee Theatre.

Police gather in front of Donald Trump’s bus outside the Milwaukee Theatre before the Republican presidential debate.