The second round of Republican presidential debates airs tonight on CNN, and it has all the makings of a showdown. What will the candidates talk about—and what should they talk about? Will the contenders-who-are-not-real-estate-moguls elbow their way to the front of the line? What will we learn about their platforms and leadership styles? Who are these people who want us to make them the leader of the free world?

To prep for tonight’s debate, read these profiles of Ben Carson, Ted Cruz, Carly Fiorina and Donald Trump—plus much more coverage of the presidential race—on the Next Issue app.

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What If Sarah Palin Were a Brain Surgeon?

GQ

Ben Carson is a Tea Party conservative and former neurosurgeon with a memoir and TV biopic.

Right Turns Only

Time

Ted Cruz considers himself a “true conservative” and a fierce critic of the Republican establishment.

Why, Carly?

Bloomberg Businessweek

After a rough ending to Carly Fiorina’s corporate career, the former HP executive wants to head up the executive branch.

Taking Trump Seriously

Rolling Stone

Donald Trump: Love him or hate him, but don’t underestimate him.