https://redistricting.capitol.texas.gov/reqs
Requirement to Redistrict
The federal constitution calls for reapportionment of congressional seats according to population from a decennial census (Section 2, Article I). Reapportionment is the allocation of a set number of districts among established units of government. The 435 congressional seats are reapportioned among the 50 states after each decennial census according to the method of equal proportions. The boundaries of the individual congressional districts within each state are then redrawn by the state legislature in accordance with state and federal law.
Redistricting is the revision or replacement of existing electoral districts, resulting in new districts with different geographical boundaries. The basic purpose of decennial redistricting is to equalize population among electoral districts after publication of the United States decennial census indicates population has increased or decreased over the last decade.
The Texas Constitution requires the legislature to redistrict Texas house and senate seats during its first regular session following publication of each United States decennial census (Section 28, Article III). After each census, State Board of Education seats also must be redistricted to bring them into compliance with the one‐person, one‐vote requirement.
