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Missouri · 2026 Regular Session · Bill

SB 1309: Modifies provisions relating to the admissibility of expert testimony evidence

In committee Official data

  1. Introduced
  2. In committee
  3. Passed one chamber
  4. Passed both chambers
  5. Enacted

Last official action: ·Record last updated:

Plain-language summary

SB 1309 is a bill introduced in the Missouri Senate on December 1, 2025. According to its official title, it concerns: Modifies provisions relating to the admissibility of expert testimony evidence. Primary sponsor: Curtis Trent (Republican). Most recent recorded action (January 27, 2026): Second Read and Referred S General Laws Committee.

Generated automatically from the official title, sponsor list, and status record only. It does not characterize the bill’s purpose or effects. How summaries are written

Official summary

Abstract published by the legislature (via Open States). Text as published by the legislature; reproduced verbatim.

SB 1309 - This act makes changes to the provision regarding admissibility of expert testimony to mirror the Federal Rules of Evidence. Specifically, expert testimony may not be admitted unless the proponent demonstrates to the court that it is more likely than not that the proffered testimony meets the knowledge, testimony, and reliability requirements. Furthermore, this act modifies the reliability requirement by providing that the expert's opinion reflects a reliable application of, rather than the expert has reliably applied, the principles and methods to the facts of the case. This act is identical to SB 918 (2026), HB 2255 (2026), SB 238 (2025), HB 263 (2025), and a provision in SB 313 (2025). KATIE O'BRIEN

Sponsors

Sponsors by party (alphabetical): Republican 1

NameRolePartyChamberDistrict
Curtis TrentPrimary sponsorRepublicanSenate20

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

  1. Second Read and Referred S General Laws Committee
  2. S First Read
  3. Prefiled

Sources

  1. Open States / Plural (data from the official legislature website)
  2. Official legislature source