GOP presidential debate at the Reagan Library
Donald Trump, left, and Jeb Bush
(Robert Gauthier / Los Angeles Times)
Candidates Scott Walker and Carly Fiorina walk onstage at the start of the GOP debate at the Reagan Library in Simi Valley.
(Rick Loomis / Los Angeles Times)
Republican presidential candidate Ben Carson, left, and Donald Trump shake during the GOP debate at the Reagan Library.
(Robert Gauthier / Los Angeles Times)
Donald Trump
(Robert Gauthier / Los Angeles Times)
Republican presidential candidates Donald Trump and Jeb Bush spar early in the GOP debate at the Reagan Presidential Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Republican presidential candidates shake hands at the end of the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
A jubilant Reince Priebus, chairman of the Republican National Committee, walks the spin room after the debate.
(Robert Gauthier / Los Angeles Times)
Republican presidential candidates Donald Trump and Jeb Bush high-five during the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Republican presidential candidate Donald Trump joins Arnold Schwarzenegger after the GOP debate at the Reagan Library.
(Robert Gauthier / Los Angeles Times)
Candidate Ben Carson is surrounded by media in the spin room after the GOP debate at the Reagan Library.
(Rick Loomis / Los Angeles Times)
Candidate Donald Trump makes his way through a media scrum as he tries to exit the spin room after the debate.
(Rick Loomis / Los Angeles Times)
Air Force One serves as a backdrop for the Republican presidential debate held Wednesday at the Ronald Reagan Presidential Library in Simi Valley.
(Rob Gauthier / Los Angeles Times)
Marco Rubio, left, and Ted Cruz
(Robert Gauthier / Los Angeles Times)
Former Governor Arnold Schwarzenegger attends the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Donald Trump speaks during the GOP debate at the Reagan Presidential Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Chris Christie
(Robert Gauthier / Los Angeles Times)
Rand Paul
(Robert Gauthier / Los Angeles Times)
Mike Huckabee
(Robert Gauthier / Los Angeles Times)
Carly Fiorina
(Robert Gauthier / Los Angeles Times)
Presidential candidates Ben Carson, left and Donald Trump during the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Donald Trump and Jeb Bush talk before the 2015 Republican presidential debate held Wednesday at the Ronald Reagan Presidential Library in Simi Valley.
(Rick Loomis / Los Angeles Times)
Republican presidential candidates on the stage before the start of the main GOP debate at the Reagan Library in Simi Valley.
(Rick Loomis / Los Angeles Times)
Republican presidential candidates Rick Santorum, George Pataki, Bobby Jindal and Lindsey Graham, from left, after the second-tier GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Republican presidential candidate Gov. Bobby Jindal after the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Republican presidential candidates George Pataki and Rick Santorum during the early GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
CNN moderator Jake Tapper speaks at the opening of the debate at the Reagan Library.
(Robert Gauthier / Los Angeles Times)
Republican presidential candidates George Pataki, Rick Santorum, Bobby Jindal and Lindsey Graham are introduced during the first-tier GOP debate at the Reagan Library.
(Robert Gauthier / Los Angeles Times)
The first debate featured four Republican presidential candidates at the Reagan Library.
(Rick Loomis / Los Angeles Times)
The media filing room is filled with images of Republican presidential candidate Donald Trump at the GOP debate at the Reagan Library.
(Rick Loomis / Los Angeles Times)
Republican presidential candidate Ben Carson, front, passes a row of images of former U.S. presidents before the GOP debate at the Reagan Presidential Library in Simi Valley.
(Rick Loomis / Los Angeles Times)
Republican presidential candidate Ben Carson talks to reporters in the media tent before the GOP debate at the Reagan Library.
(Robert Gautheir / Los Angeles Times)
Republican presidential candidate Gov. Scott Walker of Wisconsin interviews with Fox News before the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Republican presidential candidate Gov. Scott Walker of Wisconsin after an interview with Fox News at the Reagan Library prior to the GOP debate.
(Robert Gauthier / Los Angeles Times)
A banner of Ronald Reagan greets visitors as they arrive for the Republican presidential debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Members of the media prepare for the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Preparations are made inside the spin room backstage at the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Paul Raphel, a producer for Larry King’s “Kings’ Politiking,” works in a cubicle inside the spin room backstage at the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Reporters prepare for the GOP debate at the Reagan Library in Simi Valley.
(Robert Gauthier / Los Angeles Times)
Members of the media walk through the set before the GOP debate at the Reagan Library in Simi Valley.
(Robert StJohn / Los Angeles Times)