Texas voters turned out in record numbers for the March 3 midterm primaries, casting a total of 4.3 million ballots across Democratic and Republican contests. The figure marked the highest primary turnout in state history for a midterm cycle, with about 23% of the state's 18.7 million registered voters participating.

Democrats led the surge, accounting for 2.2 million votes, while Republicans cast more than 2 million. This represented the first time since 2020 that Democratic primary turnout exceeded Republican participation in a Texas midterm primary. The Democratic U.S. Senate primary alone drew over 2.2 million ballots, the most for any midterm primary since at least 1970 and more than double any other Democratic midterm primary in the state this century.

Compared to prior midterm cycles, overall turnout rose from 17% in 2018 and 18% in 2022, with Democratic participation climbing to 12% from 7% in 2018. Early voting set its own benchmarks, with more ballots cast in the first seven days than in any recent midterm or presidential primary period.

The surge occurred in 158 of Texas's 254 counties compared to 2022 levels, spanning urban, suburban, and rural areas. In Harris County, turnout exceeded 500,000 voters, shattering the previous midterm primary record with over 340,000 early votes and 201,000 on Election Day.

Intense competition in the U.S. Senate races fueled the participation. On the Democratic side, state Rep. James Talarico faced U.S. Rep. Jasmine Crockett. Republicans saw Sen. John Cornyn challenged by Attorney General Ken Paxton and others. A high number of contested statewide offices also contributed to the energy.

While Democratic enthusiasm stood out, analysts cautioned that primary turnout does not always predict general election outcomes. In 2008, nearly 2.9 million Democrats voted in their presidential primary, yet Republicans won the statewide general election by 12 points.

The primaries kicked off the 2026 midterm cycle across the South, with North Carolina and other states also reporting elevated participation, particularly among Democrats in key Senate races. Results set the stage for runoffs in May and the November general election, where control of Congress and state leadership hangs in the balance.