First GOP debate field

Wisconsin Gov. Scott Walker suspended his campaign for the GOP presidential nomination on Sept. 21, 2015.

(Isaac Brekken / AP)

Chicago Tribune

Aug. 4, 2015 3:20 PM PT

Donald Trump, Jeb Bush, Scott Walker and the seven other Republican contenders who made the campaign’s first cut.

New Jersey Gov. Chris Christie announced his bid for president in 2016 on June 30, 2015.

(Kena Betancur, Getty/AFP)