Paul

Republican presidential debate and 5 things to watch for

Donald Trump, Sen. Ted Cruz, Sen. Marco Rubio and Sen. Rand Paul. Robyn Beck/AFP/Getty; second right: Justin Sullivan/Getty Images (ABC News) — The first Republican debate of 2016 takes place tonight in South Carolina, just 18 days before the Iowa caucuses. Hosted by the Fox Business Network, the debate will feature seven candidates: Donald Trump, Ted Cruz, Marco Rubio, Ben Carson,…