(CNN) - The CNN Political Ticker is live blogging the CNN Arizona Republican Presidential Debate in Mesa. Check here for live updates throughout the event and be sure to follow @PoliticalTicker, @CNNPolitics and use #CNNDebate. Participating in Wednesday's debate are former Massachusetts Gov. Mitt Romney, former House Speaker Newt Gingrich, former Pennsylvania Sen. Rick Santorum, [...]Read More About: Live blog: CNN Arizona Republican Presidential Debate