Collin County GOP feud erupts over Frisco mayoral runoff endorsement

Byron Henry, the Collin County Republican Party chair, won a temporary restraining order against consultants and precinct chairs backing Rod Vilhauer, escalating an intraparty fight over whether local GOP leaders could officially endorse him in Frisco’s mayoral runoff.

The clash matters because the runoff pits Vilhauer against Mark Hill for a job that will help steer one of North Texas’ fastest-growing suburbs. Frisco canvassed its May 2 election on May 12 and set the runoff for Saturday, June 13, with early voting running June 1-9.

At the center of the dispute is the role of precinct chairs, who are elected by Republican primary voters or appointed by the county chairman. Together, they make up the party’s Executive Committee, and the Collin County GOP says that gives them a formal voice on party issues. The question of whether those chairs could vote to endorse Vilhauer has turned a local runoff into a fight over party authority.

Hill enters the runoff as a business attorney, former Frisco ISD board president and current member of the Frisco Economic Development Corporation board. Vilhauer, a former construction company owner, has campaigned as a conservative businessman and has pushed themes of fiscal responsibility, public safety, transparency and growth.

The race has already drawn heightened scrutiny because of Vilhauer’s remarks about Muslims and immigrants, as well as broader tensions over growth, diversity and suburban politics in Frisco. With both candidates advancing out of the May election after neither won a majority, the June 13 runoff will decide who becomes mayor in a city that has become a regional flashpoint.

Vilhauer’s campaign site lists endorsements from U.S. Rep. Brandon Gill, state Rep. Mitch Little, state Reps. Shelly Luther and Andy Hopper, the Denton County Republican Party and precinct chair Brian Long. That backing, along with the county party fight, has underscored how deeply Republican donors, activists and consultants have become involved in what is technically a nonpartisan city race.

For Collin County Republicans, the dispute is more than a paperwork fight. It exposes a public struggle inside one of North Texas’ strongest GOP organizations at the same moment Frisco voters are deciding whether the city’s next mayor will be Hill, a longtime civic insider, or Vilhauer, whose campaign has leaned hard into conservative identity politics.