Final answer:
The one-person, one-vote principle was introduced to Texas through the 1964 U.S. Supreme Court case Reynolds v. Sims. This decision ensured that all people's votes should be counted equally, leading to the redrawing of districts to include equal numbers of voters.
Step-by-step explanation:
The one-person, one-vote principle was introduced to Texas through the landmark 1964 U.S. Supreme Court case Reynolds v. Sims. This case reaffirmed the concept that all people's votes should be counted equally, regardless of geographical distribution. Before this decision, small groups in sparsely populated rural areas had as much voting power as densely populated urban areas. As a result, districts were redrawn to include equal numbers of voters, ensuring that each person's vote in an election is worth the same.