Who won, who lost, and what was too close to decide in the Texas primary

Morgan Luttrell, a former Navy SEAL who served in the Department of Energy under President Donald Trump, appeared to be on his way to winning the Republican primary in the 8th Congressional District, a GOP stronghold in the Houston area where the incumbent president is retiring. As of 1 a.m., he had about 53 percent of the vote, more than double that of runner-up Christian Collins, and the only question was whether Mr. Luttrell would stay above the 50 percent mark to avoid a runoff.

Mr. Luttrell and Mr. Collins did not differ much in politics. But Mr. Collins and his supporters, including Senator Ted Cruz of Texas, Rep. Marjorie Taylor Green of Georgia and the right-wing Freedom Caucus of the House of Representatives, have sought to present the race as a contest between Trump’s base, which he has laid claim to, and the Republican “establishment”, which he accused Mr. Luttrell of representing.

Monica de la Cruz, the Trump-backed candidate, won the Republican primary in the 15th congressional district, which stretches about 250 miles from San Antonio to the Mexican border and is the only competitive House seat left in Texas after Republican machinations.

The Democratic Party primaries were clearly approaching a runoff, with no candidate winning even 30 percent, but it was unclear who would move forward. Ruben Ramirez, a lawyer and veteran of Afghanistan, was in the lead in first place as of 1 a.m., but several competitors were within striking distance of second place.

The rematch between Representative Henry Cuellar, one of the most conservative Democrats in Congress, and Jessica Cisneros, the progressive challenger who nearly toppled him in 2020, is too close to be announced in South Texas’s 28th congressional district. Stoke seemed more and more likely.

Ms. Cisneros, backed by Senator Bernie Sanders, Senator Elizabeth Warren, Rep. Alexandria Ocasio-Cortez and other progressive leaders, outperformed Cuellar by four percentage points in 2020. This year, Mr. Cuellar may have suffered. during an investigation in which the FBI raided his home in January, details of which were not released.

Another progressive candidate, Tania Benavidez, won just under 5 percent of the vote.

Greg Casar, a progressive Democrat, won decisively in the 35th congressional district, defeating State Representative Eddie Rodriguez. The seat in Austin is all blue and is being vacated by Representative Lloyd Doggett, who decided to run for the neighboring county after the lines were redrawn this year.

Austin City Councilman Mr. Casar was supported by the Justice Democrats and Ms. Ocasio-Cortez, and his victory signaled a shift in the Democratic base to the left. He is affiliated with the Democratic Socialists of America, although the group’s Austin chapter withdrew its support last month after he said he supported military aid to Israel.