---
type: "Bill"
title: "Death penalty: person with an intellectual disability."
description: "Existing law authorizes a defendant to apply, prior to the commencement of trial, for an order directing that a hearing to determine intellectual disability be conducted when the prosecution in a criminal case seeks the death penalty. Existing law requires the court to order a hearing to determine whether the defendant has an intellectual disability upon the submission of a declaration by a qualified expert stating the expert's opinion that the defendant is a person with an intellectual disability. Existing law defines \"intellectual disability\" for these purposes as a condition of significantly subaverage general intellectual functioning existing concurrently with deficits in adaptive behavior and manifested before 18 years of age."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20192020"
identifier: "AB 2512"
citation: "California AB 2512 (20192020)"
classification: ["bill"]
subjects: ["Death penalty: person with an intellectual disability."]
status: "enacted"
primary_sponsors: ["Mark Stone"]
version_count: 7
action_count: 20
vote_count: 4
first_action: "2020-02-19"
last_action: "2020-09-30"
source: "openstates"
source_identifier: "ocd-bill/bcd130c8-626d-4c63-a2f6-856214314535"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB2512"
source_hash: "4f47da24169c68d7059f451fee2bb6249351b22677bee832557bd3e350a2e673"
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-ca"]
---

# California AB 2512 (20192020) — Death penalty: person with an intellectual disability.

Existing law authorizes a defendant to apply, prior to the commencement of trial, for an order directing that a hearing to determine intellectual disability be conducted when the prosecution in a criminal case seeks the death penalty. Existing law requires the court to order a hearing to determine whether the defendant has an intellectual disability upon the submission of a declaration by a qualified expert stating the expert's opinion that the defendant is a person with an intellectual disability. Existing law defines "intellectual disability" for these purposes as a condition of significantly subaverage general intellectual functioning existing concurrently with deficits in adaptive behavior and manifested before 18 years of age.

## Version chain

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

1. **02/19/20 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB2512&version=20190AB251299INT)
2. **05/06/20 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB2512&version=20190AB251298AMD)
3. **05/14/20 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB2512&version=20190AB251297AMD)
4. **06/08/20 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB2512&version=20190AB251296AMD)
5. **09/30/20 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB2512&version=20190AB251294CHP)
6. **AB2512** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB2512)
7. **08/31/20 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB2512&version=20190AB251295ENR)

## Votes

- Do pass. — **6–1** (pass) · lower
- 3rd Reading AB2512 Mark Stone et al. By Bradford — **30–1** (pass) · upper
- Do pass — **5–0** (pass) · upper
- AB 2512 Mark Stone Assembly Third Reading — **57–0** (pass) · lower

## Sponsors

- Mark Stone — primary (person)
- Bloom — coauthor (person)
- Bonta — coauthor (person)
- Chiu — coauthor (person)
- Kalra — coauthor (person)
- Mullin — coauthor (person)
- Quirk — coauthor (person)
- Ting — coauthor (person)
- Wicks — coauthor (person)

## Timeline

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

- **2020-02-19** Read first time. To print. `reading-1`
- **2020-02-20** From printer. May be heard in committee March 21.
- **2020-02-27** Referred to Com. on PUB. S. `referral-committee`
- **2020-05-06** From committee chair, with author's amendments: Amend, and re-refer to Com. on PUB. S. Read second time and amended. `reading-1, reading-2, amendment-passage, amendment-introduction`
- **2020-05-07** Re-referred to Com. on PUB. S. `referral-committee`
- **2020-05-14** From committee chair, with author's amendments: Amend, and re-refer to Com. on PUB. S. Read second time and amended. `reading-1, reading-2, amendment-passage, amendment-introduction`
- **2020-05-18** Re-referred to Com. on PUB. S. `referral-committee`
- **2020-05-20** From committee: Do pass. (Ayes 6. Noes 1.) (May 19). `committee-passage-favorable, committee-passage`
- **2020-05-21** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2020-06-08** Read third time and amended. Ordered to third reading. (Page 4679.) `amendment-passage, reading-3, reading-1`
- **2020-06-15** Read third time. Passed. Ordered to the Senate. (Ayes 57. Noes 0. Page 4851.) `passage, reading-3, reading-1`
- **2020-06-16** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2020-07-01** Referred to Com. on PUB. S. `referral-committee`
- **2020-08-01** From committee: Do pass. (Ayes 5. Noes 0.) (July 31). `committee-passage-favorable, committee-passage`
- **2020-08-03** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2020-08-28** Read third time. Passed. Ordered to the Assembly. (Ayes 30. Noes 1. Page 4372.). `passage, reading-3, reading-1`
- **2020-08-28** In Assembly. Ordered to Engrossing and Enrolling. `committee-passage`
- **2020-09-04** Enrolled and presented to the Governor at 2 p.m.
- **2020-09-30** Approved by the Governor. `executive-signature`
- **2020-09-30** Chaptered by Secretary of State - Chapter 331, Statutes of 2020.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/bcd130c8-626d-4c63-a2f6-856214314535`. Confidence: reported (aggregated from official California legislature records).