The usual choice considered by legislatures is to make districts more or less equal by dividing up shares of the state’s total population, or, as an alternative, to draw lines based upon some measure of the voting members of the population — such as the numbers actually registered to vote.
Two Texas voters, who wound up in state senate districts where they say their votes will count less than the votes in another district even though each of those districts has about the same total number of people, argued that this contradicts the “one-person, one-vote” guarantee of voter equality. Their votes would have counted equally, they contended, if the legislature instead had used voting-age population as the measure.
The voters, Sue Evenwel, who lives in Titus County in Senate District 1, and Edward Pfenninger, who lives in Montgomery County in District 4, said their votes were diluted because of the disparity between the two measures as applied to those districts, where more of the people vote proportionally. Both districts are rural. Other, more urban districts have proportionally fewer registered voters, so the redistricting plan based on actual population is said to give those who do vote more weight — that is, fewer of them can control the outcome.
