Glenn Callison, one of three Republicans seeking their party's nomination in the Collin County-based HD-66, released a TV ad in which he promises to keep government small, taxes low and to repeal Obamacare. He is vying with Stacy Chen and Matt Shaheen for the seat left open when Van Taylor opted to run for the state Senate. The nominee faces a Libertarian candidate, Ian Santorella, in November.
Texas Tribune donors or members may be quoted or mentioned in our stories, or may be the subject of them. For a complete list of contributors, click here.