---
type: "Bill"
title: "Criminal procedure; clarifying admissibility of certain expert testimony. Effective date."
description: "Criminal procedure; clarifying admissibility of certain expert testimony. Effective date."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2020"
identifier: "SB 958"
citation: "Oklahoma SB 958 (2020)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Floyd", "West (Kevin)"]
version_count: 5
action_count: 20
vote_count: 1
first_action: "2019-02-04"
last_action: "2019-05-02"
source: "openstates"
source_identifier: "ocd-bill/518c1573-7283-4148-bf1b-83b3d4835b3f"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=SB958&session=2000"
source_hash: "04793fdb4db0d36cc58d9ad1cc642caf6d19875488572c1eefab491cdb57152e"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ok"]
---

# Oklahoma SB 958 (2020) — Criminal procedure; clarifying admissibility of certain expert testimony. Effective date.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 INT/SB/SB958 INT.PDF)
2. **Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 ENGR/SB/SB958 ENGR.PDF)
3. **Enrolled (final version)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 ENR/SB/SB958 ENR.PDF)
4. **Floor (House)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLR/HFLR/SB958 HFLR.PDF)
5. **Floor (Senate)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLR/SFLR/SB958 SFLR.PDF)

## Votes

- THIRD READING — **43–2** (pass) · upper

## Sponsors

- Floyd — primary (person)
- West (Kevin) — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2019-02-04** First Reading `introduction, reading-1`
- **2019-02-04** Authored by Senator Floyd
- **2019-02-11** Second Reading referred to Judiciary `referral-committee, reading-2`
- **2019-02-20** Coauthored by Representative West (Kevin) (principal House author)
- **2019-02-26** Reported Do Pass Judiciary committee; CR filed `committee-passage`
- **2019-03-05** General Order, Considered
- **2019-03-05** Measure passed: Ayes: 43 Nays: 2 `passage`
- **2019-03-05** Referred for engrossment
- **2019-03-06** Engrossed to House `passage`
- **2019-03-06** First Reading `introduction, reading-1`
- **2019-03-19** Second Reading referred to Judiciary `referral-committee, reading-2`
- **2019-04-02** CR; Do Pass Judiciary Committee `committee-passage`
- **2019-04-25** General Order
- **2019-04-25** Third Reading, Measure passed: Ayes: 89 Nays: 0 `passage, reading-3`
- **2019-04-25** Signed, returned to Senate
- **2019-04-25** Referred for enrollment
- **2019-04-29** Enrolled, to House
- **2019-04-29** Signed, returned to Senate
- **2019-04-29** Sent to Governor `executive-receipt`
- **2019-05-02** Approved by Governor 05/02/2019 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/518c1573-7283-4148-bf1b-83b3d4835b3f`. Confidence: reported (aggregated from official Oklahoma legislature records).