By Jim Ellis — Monday, March 20, 2023
States
Demographics: A Shifting South Texas Electorate — Typically, not much used to happen politically in the Texas’ Rio Grande Valley congressional districts that touch the US-Mexico border, but such is not the case anymore.

Republican freshman Rep. Monica de la Cruz (R-McAllen) converted what became an open 15th District, which stretches from the San Antonio area all the way to the border.
The trend carried over into the 2022 election where almost all of the state’s political action was centered in the border districts, and it’s not just because the cross points are being challenged and overrun with foreigners illegally coming into the United States. Largely due to the Biden Administration’s energy policies and the Democrats’ “Green New Deal” that is causing the area to lose energy-related jobs, Republicans are making political gains. In what were once highly safe Democratic CDs, we now see heightened political competition.
The region is changing to such a degree that now even one of the area’s Republican congressmen, Rep. Tony Gonzales (R-San Antonio) — in the district that stretches from San Antonio all the way to El Paso and contains more of the border territory than any district in the country — is facing a new primary challenge from his political right. This seat has been competitive for years in the general election, but now is settling itself as the South Texas region’s most reliable Republican seat.
Republican freshman Rep. Monica de la Cruz (R-McAllen — above), who converted what became an open 15th District that stretches from the San Antonio area all the way to the border in and around the McAllen area, looks to be in solid position for re-election next year.
Redistricting is a factor in the results, and if the GOP map drawers had known what would happen in a special election in the Brownsville-anchored 34th District early in 2022, they would likely have crafted different boundaries.
As a result, Republican Mayra Flores, who made national news in 2022 when she scored an upset special election win in the 34th, ultimately fell 51-43 percent to fellow Rep. Vicente Gonzalez (D-McAllen) in the general election. Rep. Gonzalez, seeing the trends in his 15th CD, decided to run for re-election in the more Democratic 34th after then-Rep. Filemon Vela resigned the seat to accept a position in the private sector.