AUSTIN (CBSDFW.COM/AP) — Lawmakers in Texas have released their first proposal to redrawn congressional maps. The draft would shore up Republican dominance in the state and bolster their nearly two dozen U.S. House members, while adding new districts in Austin and Houston.

Texas was the big winner in the 2020 Census, as torrid growth fueled by nearly 2 million new Hispanic residents made it the only state awarded two additional congressional seats, bringing its total to 38.

READ MORE: Woman Hit, Killed By Car While Walking In Grapevine Roadway; Drunk Driver Crashes Into Firetruck On Scene Say Police

Those demographic shifts threaten decades of Republican control in Texas, but in taking up the once-in-a-decade process of drawing new voting maps, GOP mapmakers’ first draft largely appears to firewall their existing seats and advantage rather than take additional seats from Democrats. One exception is along the Texas-Mexico border, where — encouraged by former President Donald Trump’s strong showing in 2020 — Republicans could make it harder for Democrats to hang onto a longtime stronghold currently held by Rep. Vicente Gonzalez.

Latino advocates and officeholders believed the numbers demanded at least one new Latino-majority congressional seat in Texas, around the Dallas area, but none was included in the Republicans’ first pass.

Booming suburban districts in Texas, which include four of the 10 fastest-growing and rapidly diversifying cities in the U.S., would be fortified with more voters pulled from surrounding rural areas.

READ MORE: Report: At Least 59,000 Meat Workers Caught COVID, 269 Died

Republicans currently have 23 House seats in Texas, while Democrats have 13.

The maps are the product of Texas Republicans wielding a newly freer hand to reengineer political boundaries: For the first time in more than 50 years, Texas is starting the redistricting process without federal oversight. A Supreme Court ruling in 2013 removed mandatory federal approval of new maps for Texas and all or parts of 15 other states with a history of discrimination in voting.

The redrawn districts unveiled by Republican mapmakers are starting points and will likely undergo changes in the coming weeks before being sent to Republican Gov. Greg Abbott for his signoff.

In every decade since the passage of the Voting Rights Act in 1965, courts or the Department of Justice have ruled that Texas’ redistricting plans violated federal laws — partly by scattering Democratic-leaning Latino voters among multiple districts dominated by non-Latino white residents who lean Republican.

MORE NEWS: Desperate To Find More Staff, Some Fast Food Restaurants Recruiting Customers

(© Copyright 2021 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)

CBSDFW.com Staff