Mattie Parker’s 2 Democrat Endorsements Raise Questions

Fort Worth, TX – Fort Worth Mayor Mattie Parker has spent years cultivating her reputation as a Republican who can work across party lines. Now, with Texas voters preparing to choose their next attorney general and railroad commissioner, she is publicly backing Democrats for both offices. And her political record includes a relationship with Sen. John Cornyn, whose allies spent millions trying to keep Ken Paxton off the Republican Senate ticket.

For Republicans who believe party labels ought to mean something, Parker’s latest endorsements raise uncomfortable questions. For voters trying to understand who is aligned with whom in Texas politics, the campaign finance records offer another piece of the puzzle, though not proof of a coordinated political operation.

According to recent reporting by the Dallas Morning News and Fort Worth Star-Telegram, Parker has endorsed state Sen. Nathan Johnson, a Democrat, for Texas attorney general over Republican state Sen. Mayes Middleton. She also endorsed Democratic state Rep. Jon Rosenthal for Texas Railroad Commissioner over Republican nominee Bo French.

Parker’s endorsement of Rosenthal was made public October 25. In a statement reported by Capitol Inside, she called Rosenthal “the right choice for Texas Railroad Commissioner,” praising his experience and his approach to regulation and industry partnerships. She also criticized the role of “culture wars and bigotry” in the race, a clear rebuke of the controversy surrounding French’s past social media posts.

Parker’s support for Johnson puts her on the opposite side of another statewide contest from the Republican nominee. She told news outlets she had worked with Johnson previously. She has not, however, endorsed Democrat James Talarico in the U.S. Senate race against Paxton, telling reporters she remained undecided.

That is a more complicated political picture than a simple party switch. Parker has also endorsed Republican county officials, and in October 2025 she publicly backed Cornyn for reelection, calling him “a loyal friend and valued partner to Fort Worth,” according to the Star-Telegram.

A documented Cornyn connection

Parker’s relationship with Cornyn predates the current election cycle. On January 19, 2024, Cornyn’s Senate office announced that the senator had met with Parker in Washington the previous day. Their discussion covered federal border policies and Fort Worth’s efforts to combat fentanyl. Cornyn’s office also noted that he had attended the Fort Worth Stock Show and Rodeo with Parker.

In February 2026, Parker appeared with Cornyn at a campaign event at the Fort Worth Police Association, where the senator argued that Republicans could jeopardize their statewide prospects if Paxton won the GOP nomination. Parker spoke in support of Cornyn, according to the Star-Telegram.

The financial records provide another documented connection.

Parker’s campaign finance report covering April 24 through June 30, 2025, lists a $1,000 contribution from Textron Inc. Political Action Committee on May 12, 2025. Textron’s federal disclosures show that the same PAC contributed to Alamo PAC, Cornyn’s leadership PAC, during the 2023–2024 cycle. The records supplied for this investigation list $10,000 in contributions to Alamo PAC, while Textron’s published disclosure independently confirms a $5,000 payment in February 2024.

Federal campaign finance data also show Textron PAC contributed directly to Cornyn’s Senate campaign during the 2025–2026 cycle. The PAC has donated to both Republicans and Democrats, so its contributions do not establish a partisan motive.

The connection is real. The implications must be handled carefully.

Follow the money, but don’t skip the evidence

Parker has also received historical support from prominent North Texas business figures. The Star-Telegram previously reported that Ross Perot Jr. and Hillwood president Mike Berry contributed to her 2021 mayoral campaign. The Texas Tribune, meanwhile, has documented Perot Jr.’s participation in Cornyn’s broader donor network and reported that Texans for a Conservative Majority spent heavily to support Cornyn and attack Paxton during the 2026 Senate primary.

Those facts establish overlapping political relationships across time. They do not establish that Perot Jr., Berry, Textron, Parker, or Cornyn coordinated the endorsements now drawing attention. Nor have the records reviewed for this story established a direct contribution from Texans for a Conservative Majority to Parker’s campaign.

But voters are entitled to ask what these relationships tell us about the people seeking to represent them.

Texas Republicans have spent years arguing that elections should be about principles, accountability, and the direction of the state. When a Republican mayor publicly backs Democrats for two statewide offices while supporting Cornyn, a senator whose allies worked aggressively against Paxton, voters deserve a straightforward explanation of her choices.

Parker is entitled to make her endorsements. Voters are entitled to examine them. And campaign finance disclosures exist for precisely this reason: the public should be able to follow political money, identify relationships, and draw conclusions supported by the evidence.

The records show a network of shared financial and political connections. They do not settle every question, but they give Texans a reason to keep asking them.

Sources:
Fort Worth Star-Telegram: Parker and former Mayor Betsy Price endorse Cornyn.
The Texas Tribune: Donors behind Cornyn and Paxton’s Senate fight.
The Texas Tribune: Cornyn’s fundraising and Texans for a Conservative Majority.
Cornyn’s Senate office: Meeting with Fort Worth Mayor Mattie Parker.
Capitol Inside: Parker backs Democrat Jon Rosenthal for Railroad Commission.
Nathan Johnson’s campaign news page.
Textron PAC contribution and disbursement records.