Of all the surprises, of all the unexpected ironies, of all the unanticipated turns in the Republican presidential race, it's possible that Donald Trump has been hurt by telling the truth.

Former Secretary of State Hillary Clinton, former Maryland Gov. Martin O'Malley and Vermont Sen. Bernie Sanders will field questions from Iowa Democrats in this prime-time event hosted by the Iowa Democratic Party and Drake University. "We are honored to partner with CNN on their town hall with our three fantastic Democratic candidates," said Dr. Andy McGuire, chair of the Iowa Democratic Party.

"He's not telling the truth," Cruz said flatly during an interview with CNN aboard his campaign bus. The GOP presidential front-runner here in Iowa, where he is in the middle of a six-day bus tour, argued that the President is focusing on the wrong problem when it comes to curbing gun violence.