Former Virginia Governor Jim Gilmore is the only GOP candidate who didn't earn a spot onstage.
The success of the two veteran politicians makes the Republican race even more confusing going into New Hampshire.
The Ohio governor has built a base of support among moderate Republicans and independent voters.
Unlike other debates, ABC News will not hold an undercard for low-polling candidates.
The Ohio governor tied with Ted Cruz for second place in a new WBUR poll in the early-voting state of New Hampshire.
Cruz and Trump began arguing about Cruz's eligibility to run for office.
The first GOP debate of the 2016 presidential year will be available online without a cable subscription.
Trump said the address was "really boring, slow, lethargic—very hard to watch!"
The 12-year-old boy was killed in November 2014 in a Cleveland park.
The focus on the economy gave veteran politicians a chance to tout their records and experience.
Trump reveals he packs heat when asked whether he would feel more comfortable if his employees carried weapons to work.
Wednesday night's event was meant to focus primarily on business and the economy.
Economy! Jobs! Taxes!
Ohio Governor Kasich on Tuesday took a more moderate stance on a major immigration question that is dividing Repulicans.
Most GOP candidates promise brave new interventions and wars.
During a preliminary GOP debate on Thursday, none of the candidates delved into international trade, a main talking point for front-runner Donald Trump.
Participants included former Texas Governor Rick Perry and former Pennsylvania Senator Rick Santorum.
With 10 candidates, you'll need something to keep them straight.
Kasich touts gubernatorial, congressional experience.
Gov. John Kasich's position in a swing state could be a huge asset in a presidential run.