Twenty-seven days. That's how long it has been between the 19th and 20th Republican presidential debates.
But that ends Wednesday, when former Massachusetts Gov. Mitt Romney, former Sen. Rick Santorum of Pennsylvania, former House Speaker Newt Gingrich and Rep. Ron Paul of Texas face off at a debate hosted by CNN and the Republican Party of Arizona at the Mesa Arts Center.
A lot has changed in the battle for the GOP nomination since the last debate, a CNN-Republican Party of Florida showdown in Jacksonville on January 26. Romney went on to win big in Florida and Nevada, while Gingrich, who had just scored an impressive victory in South Carolina, faded fast.FULL STORY