FILE - Sen. Roland Gutierrez, D-Texas, speaks during a news conference at a town square in Uvalde, Texas, June 2, 2022. Democrats in search of flipping a U.S. Senate seat are watching Texas closely on Super Tuesday to see who voters nominate against Republican Sen. Ted Cruz. (AP Photo/Jae C. Hong, File)
FILE - Sen. Ted Cruz, R-Texas, speaks to the media during a press conference on the border, Sept. 27, 2023, on Capitol Hill in Washington. Democrats in search of flipping a U.S. Senate seat are watching Texas closely on Super Tuesday to see who voters nominate against Sen. Cruz. (AP Photo/Mariam Zuhaib, File)
FILE - Rep.-elect Colin Allred, D-Texas., arrives for orientation for new members of Congress, Nov. 13, 2018, in Washington. Democrats in search of flipping a U.S. Senate seat are watching Texas closely on Super Tuesday to see who voters nominate against Republican Sen. Ted Cruz. (AP Photo/Pablo Martinez Monsivais, File)
This photo combo shows Sen. Roland Gutierrez, D-Texas, left, on June 2, 2022 in Uvalde, Texas, and Rep. Colin Allred, D-Texas., right, on Nov. 13, 2018, in Washington. Democrats in search of flipping a U.S. Senate seat were watching Texas closely on Super Tuesday to see who voters nominate against Republican Sen. Ted Cruz, whose underdog challengers have cast as vulnerable after a narrow margin of victory in 2018. (AP Photo/Jae C. Hong, Pablo Martinez Monsivais, File)
Supporters of U.S. Rep. Colin Allred, D-Texas, a candidate for the U.S. Senate, react as he addresses them during an election night gathering, Tuesday, March 5, 2024, in Dallas. (AP Photo/Julio Cortez)
U.S Rep. Colin Allred, D-Texas, top right, a Democratic candidate for U.S. Senate, kisses his wife, Alexandra Eber, during a primary-night gathering, Tuesday, March 5, 2024, in Dallas. (AP Photo/Julio Cortez)
U.S. Rep. Colin Allred, D-Texas, a Democratic candidate for U.S. Senate, addresses supporters during an election night gathering, Tuesday, March 5, 2024, in Dallas. (AP Photo/Julio Cortez)
U.S. Senate hopeful Colin Allred, D-Texas, top right, stands on stage with his wife, Aly Eber, during a primary-night gathering, Tuesday, March 5, 2024, in Dallas. (AP Photo/Julio Cortez)
U.S. Senate hopeful Colin Allred, D-Texas, center, and his wife Aly Eber, leave the stage after addressing supporters during an election night gathering, Tuesday, March 5, 2024, in Dallas. (AP Photo/Julio Cortez)
Supporters of U.S. Rep. Colin Allred, D-Texas, a candidate for the U.S. Senate, react as he addresses them during an election night gathering, Tuesday, March 5, 2024, in Dallas. (AP Photo/Julio Cortez)
A supporter of U.S. Senate hopeful Colin Allred, D-Texas, wears an "I Voted in Dallas County" sticker during an election night gathering, Tuesday, March 5, 2024, in Dallas. (AP Photo/Julio Cortez)