Zapata County (Tex)

In the Laredo region, long a Democratic stronghold, that single issue appears to be driving the decision for many voters, the majority of whom are Catholic.LAREDO, Texas — Like the majority of her neighbors in the heavily Latino community of Laredo, Angelica Garza has voted for Democrats for most of her adult life. Her longtime congressman, Henry Cuellar, with his moderate views and opposition to abortion, made it an easy choice, she said.But as up-and-coming Democratic candidates in her patch of South Texas have leaned ever more liberal, Ms. Garza, a dedicated Catholic, cast a ballot for Donald Trump in 2016, primarily because of his anti-abortion views.In choosing Mr. Trump that year and again in 2020, Ms. Garza joined a parade of Latino voters who are changing the political fabric of South Texas. In the Laredo region, where about nine out of 10 residents are Catholic, many registered voters appear to be driven largely by the single issue of abortion.“I’m willing to vote for any candidate that supports life,” said Ms. Garza, 75. “That’s the most important issue for me, even if it means not voting for a Democrat.”With a pivotal primary election just a week away, Ms. Garza is ready to to turn away from Democrats. Pointing at a wall covered in folkloric angel figurines at the art store she owns in Laredo, she explained why: “They are babies, angels, and I don’t think anyone has the right to end their life. We have to support life.”Angelica Garza voted for Donald Trump in 2016 because of his anti-abortion views.Christopher Lee for The New York TimesVoters like Ms. Garza are worrying Democratic leaders, whose once tight grip and influence on the Texas-Mexico border region has loosened in recent electoral cycles. Republicans have claimed significant victories across South Texas, flipping Zapata County, south of Laredo on the bank of the Rio Grande, and a state district in San Antonio. They also made gains in the Rio Grande Valley, where the border counties delivered so many votes for Mr. Trump in 2020 that they helped negate the impact of white voters in urban and suburban areas of the state who voted for Joe Biden.Much is at stake in Laredo, the most populous city of the 28th Congressional District, where Latinos are a majority, and which stretches from the eastern tip of San Antonio and includes a western chunk of the Rio Grande Valley. Since the district was drawn nearly three decades ago, the seat has been held by Democrats. Mr. Cuellar has represented the district since 2005. His moderate and sometimes conservative views — he was the only Congressional Democrat to vote against a U.S. House bill that would have nullified the state’s near-total ban on abortion that went into effect last September — have frequently endeared him to social conservatives and Republicans.But he now finds himself locked in a tight fight against a much more liberal candidate backed by the progressive wing of the party that includes Senator Bernie Sanders and Representative Alexandria Ocasio-Cortez. Mr. Cuellar, whose home was raided last month by the F.B.I. as part of an investigation that neither he nor the government has disclosed, beat his opponent, Jessica Cisneros, by four percentage points in 2020.Should he lose the primary on March 1 to Ms. Cisneros, a 28-year-old immigration lawyer who supports abortion rights, the path to flip the House of Representatives could very well run through South Texas, as Republicans have vowed an all-in campaign focused on religious and other conservative values. More