Chris Mathias

Chris Mathias: Idaho House District 19, Seat B, 2026 general election

Chris Mathias is the Democratic incumbent state representative for Idaho House District 19, Seat B, and he faces Republican Stanley Roach on the November 3, 2026 general election ballot. He ran unopposed in the May 19, 2026 Democratic primary and received 3,880 votes, or 100 percent of ballots cast, according to certified results from the Idaho Secretary of State. This is his third term representing the Boise district, per his official Legislature biography. Neither Mathias nor Roach responded to the CBS2/FOX9 candidate survey; the survey page states both candidates "did not respond to the survey in time."

Background

Mathias is a U.S. Coast Guard veteran who used the GI Bill to earn a B.S. in criminal justice administration from Boise State University, according to his official Legislature biography. The bio lists him as self-employed, with prior work as chief academic officer for the Idaho State Board of Education and as a former U.S. Senate law clerk.

His campaign website adds detail the state bio doesn't carry. It describes his current work as consulting for companies and public-sector entities on policy topics "ranging from education to emergency management." It also names him a Commissioner on the Council on Criminal Justice's Women's Justice Commission, a role he ties to Idaho having the nation's highest female incarceration rate. The bio identifies his spouse as Katie and says they have two children, with no surnames given for either. The site's framing of his approach is a single question, in his own words: "What actually helps everyday Idahoans?"

He is a member of the National Black Caucus of State Legislators, per his Legislature bio.

Committees

Mathias sits on four House committees in the 2026 session: Agricultural Affairs; Education; Ethics and House Policy; and Judiciary, Rules and Administration. That last assignment matters for the record below, because it put him on the committee that handled a contentious ethics-rules change in March 2026.

Legislative record

Mathias's most recent session produced one clear legislative win. He was floor sponsor of House Bill 500, a 2026 bill updating state law on human-powered vehicles, bicycles, and electric-assisted bicycles. It cleared the House 68-0-2 and the Senate 34-0-1, was signed by the governor, and took effect July 1, 2026.

His signature effort the year before went the other way. Mathias sponsored and floor-sponsored House Bill 44, a 2025 bill revising requirements for how public schools handle harassment, intimidation, and bullying. It passed the House on January 29, 2025, on a 43-26-1 vote, with Mathias as floor sponsor. The Senate defeated it on March 3, 2025, on a 13-21-1 vote, and the bill died.

Floor votes in 2026

Two March 2026 votes show where Mathias draws lines against his chamber's majority.

The first was House Bill 752, which criminalized knowingly and willfully entering a bathroom or changing room designated for the opposite sex in government buildings and businesses. A first offense would carry up to a year in prison and a second offense within five years up to five years in prison. Mathias spoke against it on the House floor. "The truth of the matter is, and I know a lot of people don't want to say it, but, forcing people who don't look like the sex that they were born with, or transgender folks, forcing them to use other people's bathrooms is going to put a lot of people in danger," he said, according to the Idaho Capital Sun. The House passed the bill 54-15, with six Republicans joining the nine Democrats in opposition. The Idaho Fraternal Order of Police had also opposed the bill.

The second was House Resolution 27, sponsored by Rep. Vito Barbieri, which would have made information about House ethics investigations secret unless the Ethics and House Policy Committee voted unanimously to release it. It also would have barred lawmakers under investigation from having an attorney in their hearings. Mathias sits on the Judiciary, Rules and Administration Committee that considered it, and he voted no when the panel advanced the resolution 8-7 on March 17, 2026. "The Idaho public is going to look at us and say: 'Why are they trying to protect themselves so much?'" he said, per the Idaho Capital Sun's account of the hearing. A lobbyist for the state's journalists' trade association also testified against the resolution.

Campaign finance

Through the 2026 cycle, Mathias's committee has raised $46,435.97 and spent $68,898.44, leaving $4,771.66 cash on hand and no outstanding debt, according to his Idaho Secretary of State Sunshine portal profile. His top listed contributors include Rich Prasch at $2,166.67, Sen. Carrie Semmelroth at $2,000, Jennifer Bridges at $1,600, Rep. Soñia Galaviz at $1,000, and the Coeur d'Alene Tribe at $1,000.

Sources

• Idaho State Legislature, official member page for Rep. Chris Mathias
• Mathias for Idaho, About Chris
• Idaho Capital Sun, "Idaho House passes criminal transgender bathroom ban in business, government buildings"
• Idaho Capital Sun, "Idaho House to consider making ethics investigations against lawmakers secret"
• Idaho State Legislature, House Bill 44 bill history
• Idaho State Legislature, House Bill 500 bill history
• Idaho Secretary of State Sunshine portal, Chris Mathias candidate profile
• Idaho Secretary of State, certified May 2026 primary results