A two-hour debate from Cleveland will air at 9 p.m. Thursday on Fox.
The debate will feature the top 10 polling candidates. An hour-long forum set for 5 p.m., also to be aired on Fox, will feature the other seven GOP candidates running.
Here is a guide to the candidates, the issues and the debate:
From drama to dog poop, debates have a history of curveballs
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Thursday’s GOP debate gets the campaign off to a quirky start. Read more.
Presidential debate junkies eagerly await Donald Trump
What will Donald Trump do at the first 2016 Republican debate — and how will the other candidates deal with him? Read more.
GOP debate: Who made the cut?
Rick Perry is out. John Kasich and Chris Christie are in. The former Texas governor misses the cutoff for qualifying for Thursday’s nationally televised presidential debate, Fox News announces. Only the top 10 in an average of national polls can participate. Read more.
Debate illustrates power of Fox News in GOP campaign
The buildup to this week’s first Republican presidential debate shows that the influence of Fox News Channel on the GOP selection process is stronger than ever. Read more.
Rick Perry gets shut out of debate
Rick Perry just missed the cut but will appear in a separate forum that will also be televised earlier Thursday, along with Rick Santorum, Bobby Jindal, Carly Fiorina, Lindsey Graham, Jim Gilmore and George Pataki. Read more.
No Donald Trump in GOP presidential speed-dating event
The forum, televised by C-SPAN, gave the candidates a chance to try out their debate lines, and maybe rid themselves of some jitters, before debating on Fox News later this week. Read more.
Political prose: 2016 campaign books funny, self-absorbing
We read seven 2016 presidential wannabes' books so you don't have to. Read more.
What 2016 could look like: Hillary Clinton goes after Jeb Bush while he tries to lure Democratic voters
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Top donors to political committees backing Jeb Bush, Marco Rubio hail from Miami
Familiar names donated big bucks to the outside political groups playing an increasingly prominent role in presidential campaigns. Read more.
Truth-O-Meter records of Jeb Bush
Truth-O-Meter records of Marco Rubio
For continuous updates on political news, go to our Naked Politics blog.