Eight candidates faced off at the fourth GOP debate.

Eight candidates faced off at the fourth GOP debate. While there wasn't a clear cut winner, Texas Sen. Ted Cruz, Florida Sen. Marco Rubio and Kentucky Sen. Rand Paul all delivered performances that earned them standout reviews. Rubio may have won by default, but Cruz held court for the longest amount of time.

In case you missed it, there were some notable — and entertaining — highlights like Donald Trump's colorful battle with John Kasich about building a wall along the U.S.-Mexico border. Cruz pulled a Rick Perry (minus the oops) when he listed a number of federal agencies he'd cut as president. Naturally, Twitter offered some pure gold reactions. If you were at the debate and wanted to join in on Twitter's #GOPDebate fun, you had to use the WiFi password "StopHillary."