State Representative Seat A District 12 in Idaho State House District 12, Idaho

2026 Primary Election

• Sterling Barnett — Candidate for Idaho House of Representatives District 12A in ID

  Sterling Barnett, a Democrat, is a candidate for the Idaho House of Representatives, seeking to represent District 12A. He competed in the Democratic primary on May 19, 2026, and is slated to challenge incumbent Republican Representative Jeff Cornilles in the general election on November 3, 2026. He is positioned as the Democratic challenger for this seat.

• Jeff Cornilles — Incumbent Representative for Idaho House District 12A in Nampa, ID

  Jeff Cornilles is an incumbent Republican member of the Idaho House of Representatives, representing District 12A. He assumed office on December 1, 2022, and his current term concludes on December 1, 2026. He is seeking re-election for District 12A in the 2026 elections, running in the Republican primary on May 19, 2026. He is slated to face Democratic challenger Sterling Barnett in the general election on November 3, 2026. Cornilles states his commitment to "sustaining the quality of Idaho through integrity, honesty, and experience" and expresses honor in serving his hometown of Nampa. He has been assigned to various committees during his tenure as a representative.