In 1963, at the age of thirty, McAllister, who then resided in Meridian, won a special election in Lauderdale County to fill a vacancy in the Mississippi House, the first member of his party to serve in the legislature in the 20th century.
McAllister won a special election in Lauderdale County. This was at the age of thirty. This was in 1963. This was to fill a vacancy in the Mississippi House. The Mississippi House was the first member of his party to serve in the legislature in the 20th century. McAllister then resided in Meridian.