[Editor's note: This is the third of five stories about the University of Texas/Texas Tribune poll. Monday we looked at Texas voters and the 2012 presidential contest. Yesterday, how voters rate Rick Perry's job performance. Tomorrow, voters' views on Mormon presidential candidates, immigration and the death penalty.]
Four months before the Republican primary, half of all GOP voters haven't decided who should be their nominee for the U.S. Senate, leaving the race wide open, according to the new University of Texas/Texas Tribune poll.
Among Republican voters who have chosen a candidate, Lt. Gov. David Dewhurst comfortably leads the field.