Earlier this month, the United States Supreme Court heard arguments in Evanwel vs. Abbott.  The issue in this case is how to measure population for the purposes of determining if districts have roughly equal population.  The challengers are asserting that population should be based on voters rather than the total population.  The State of Texas is claiming that each state gets to choose the appropriate measure of population.  This case involves both theoretical discussion of the nature of representation as well as very serious political impact.  The decision could vastly alter the politics of the U.S.