Right-wing Democratic Rep. Henry Cuellar is continuing to refuse to debate his primary challenger, progressive lawyer Jessica Cisneros, despite calls to do so from around the country as Cisneros continues to rack up endorsements from state and national figures and groups. 

Cuellar, a Democrat from south Texas, has dismissed Cisneros as an unserious candidate.

“Our people are waiting, Rep. Cuellar,” Cisneros tweeted on Sunday. “Debate me.”

The 240,000-member Texas AFL/CIO announced their support for Cisneros on Sunday. The endorsement is a major coup for the primary challenger.

In a video announcing the endorsement, Texas AFL-CIO President Rick Levy praised Cisneros’ priorities and campaign. 

“The 240,000 members of the Texas AFL-CIO stated that we are going to stand proudly with Jessica Cisneros in her race for Congress,” Levy said. “This district needs someone who is going to stand up for working people, stand up for poor people, and stand up for justice.”

The backing of the union is a big get, tweeted journalist Brendan O’Connor.

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