Premise: Texas District 6 of the United States House of Representatives is a Congressional district that serves an area including four counties to the south of the Dallas/Fort Worth area plus the southeast corner of Tarrant County. As of the 2000 census, District 6 represents 651,620 people. The current Representative from District 6 is Joe Barton and has been since 1985.
Hypothesis: Texas District 6 of the United States House of Representatives is historically liberal.