The Arizona Republican debate proved to be a showdown between Mitt Romney and Rick Santorum.
With campaign momentum and the eyes of the media and voters on him, Santorum was able to hold his own with Romney and at times came across as quite presidential.
Romney had his usual steady performance but the expectations were much higher for Santorum and he met those with a very solid debate outing that allowed voters to see him as a thoughtful and quick on his feet candidate.