The fifth Republican presidential debate will take place this Tuesday evening in Las Vegas, Nevada. The prime-time debate includes nine candidates and is slated to start at 8:30 p.m. ET. Of note, Gov. Chris Christie has won back a spot on the main stage, while Sen. Rand Paul barely made the threshold to stay on the prime-time stage. Donald Trump remains at the center podium, flanked by Sen. Ted Cruz and Ben Carson.