John Haughey and Nathan Worcester The four candidates competing in the shadow of President Donald Trump engaged in the most heated debate yet. With the Iowa Caucuses 39 days away, the final four Republican presidential aspirants vying for second place behind the absent yet dominant former President Donald Trump took the stage at the University of Alabama in Tuscaloosa to make their case to voters, for the fourth time this year. The wide-ranging and often combative exchanges between Florida Gov. Ron DeSantis, former South Carolina Gov. Nikki Haley, tech entrepreneur…
