Final answer:
To compare Texas' participation in early voting during the first week of early voting in 2008, 2012, and 2016, refer to the Texas Tribune website for data on early voting turnout in each of these years.
Step-by-step explanation:
In order to compare Texas' participation in early voting during the first week of early voting in 2008, 2012, and 2016, you can refer to the Texas Tribune website for the data. The Texas Tribune provides information on early voting turnout in each of these years. You can analyze the data for each year and make comparisons to see any trends or changes in early voting participation.