Joe Biden of Delaware, the former vice president, is running 7 percentage points behind Trump in Texas, as is U.S. Sen. Elizabeth Warren of Massachusetts. U.S. Sen. Bernie Sanders of Vermont falls 5 percentage points short in a head-to-head with the president among Texas voters. And the two Texas candidates also lag behind Trump: former U.S. Rep. Beto O’Rourke of El Paso (who dropped out of the race Friday, after the poll was completed) by 6 percentage points, and former U.S. Housing Secretary and San Antonio Mayor Julián Castro by 13 percentage points.

In each matchup, significant numbers of Democrats are holding back their votes — possibly a sign that while they oppose the Republican incumbent, they favor a different Democrat. For instance, 89% of Republicans say they would support Trump over Biden, and 5% say they would favor Biden, leaving 6% unwilling to pick. But in the same race, 82% of Democrats favor Biden, and 4% favor Trump, leaving 14% who either like another Democrat more or don’t want to pick yet. The biggest gap was in the Trump-Castro matchup, where 93% of Republicans have a definite choice and only 71% of Democrats do.

“I don’t think this is a reflection of what’s going to happen in the election, but as we move from registered voters to likely voters in Texas, we tend to get more Republican [results],” said Joshua Blank, research director of the Texas Politics Project at UT-Austin.