Long before movie stars Ronald Reagan and Arnold Schwarzenegger became governors of California, a popular radio personality with no previous political experience--who wasn't even registered to vote--swept into the governor's office of Texas. W. Lee "Pappy" O'Daniel was a 1930s businessman who discovered the power of radio to sell flour. His musical shows with the Light Crust Doughboys (which launched the career of Bob Wills) and his radio homilies extolling family and Christian values found a vast, enthusiastic audience in Depression-era Texas. When Pappy decided to run for governor in...