---
type: "Bill"
title: "Elections: all-mailed ballot elections: pilot project."
description: "Until December 31, 2017, existing law, as a pilot program, authorizes elections in San Mateo County and Yolo County, other than statewide primary or general elections, or special elections to fill a vacancy in a state office, the Legislature, or Congress, to be conducted wholly by mail if specified conditions are satisfied. If San Mateo County or Yolo County conducts an all-mailed ballot election, existing law requires the county to report to the Legislature and the Secretary of State, as specified."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20152016"
identifier: "AB 1504"
citation: "California AB 1504 (20152016)"
classification: ["bill"]
subjects: ["Elections: all-mailed ballot elections: pilot project."]
status: "enacted"
primary_sponsors: ["Alejo"]
version_count: 9
action_count: 26
vote_count: 5
first_action: "2015-02-27"
last_action: "2015-10-10"
source: "openstates"
source_identifier: "ocd-bill/eeb694e7-3a73-43ff-b530-62cf00b54d62"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160AB1504"
source_hash: "cc6a78d7820e41cdb2f7684cdc3dd4b7ea5cb32d3635f649d975959cf284095e"
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 1504 (20152016) — Elections: all-mailed ballot elections: pilot project.

Until December 31, 2017, existing law, as a pilot program, authorizes elections in San Mateo County and Yolo County, other than statewide primary or general elections, or special elections to fill a vacancy in a state office, the Legislature, or Congress, to be conducted wholly by mail if specified conditions are satisfied. If San Mateo County or Yolo County conducts an all-mailed ballot election, existing law requires the county to report to the Legislature and the Secretary of State, as specified.

## Version chain

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

1. **02/27/15 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150499INT)
2. **03/26/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150498AMD)
3. **04/20/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150497AMD)
4. **05/14/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150496AMD)
5. **06/01/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150495AMD)
6. **09/02/15 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150494AMD)
7. **10/10/15 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150492CHP)
8. **AB1504** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160AB1504)
9. **09/11/15 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB1504&version=20150AB150493ENR)

## Votes

- 3rd Reading AB1504 Alejo By Cannella — **32–6** (pass) · upper
- Do pass as amended. — **4–3** (pass) · lower
- AB 1504 ALEJO Assembly Third Reading — **53–27** (pass) · lower
- Do pass — **4–0** (pass) · upper
- AB 1504 ALEJO Concurrence in Senate Amendments — **52–24** (pass) · lower

## Sponsors

- Alejo — primary (person)
- Cannella — coauthor (person)
- Cooley — coauthor (person)
- Cooper — coauthor (person)
- McCarty — coauthor (person)
- Monning — coauthor (person)

## Timeline

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

- **2015-02-27** Introduced. To print. `introduction`
- **2015-03-01** From printer. May be heard in committee March 31.
- **2015-03-02** Read first time. `reading-1`
- **2015-03-26** Referred to Com. on E. & R. `referral-committee`
- **2015-03-26** From committee chair, with author's amendments: Amend, and re-refer to Com. on E. & R. Read second time and amended. `reading-2, amendment-introduction, amendment-passage, reading-1`
- **2015-04-06** Re-referred to Com. on E. & R. `referral-committee`
- **2015-04-20** From committee chair, with author's amendments: Amend, and re-refer to Com. on E. & R. Read second time and amended. `reading-2, amendment-introduction, amendment-passage, reading-1`
- **2015-04-21** Re-referred to Com. on E. & R. `referral-committee`
- **2015-05-13** From committee: Amend, and do pass as amended. (Ayes 4. Noes 3.) (May 13). `amendment-introduction, committee-passage, amendment-passage`
- **2015-05-14** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-2, reading-1`
- **2015-05-18** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2015-06-01** Read third time and amended. Ordered to third reading. (Page 1685.) `reading-3, amendment-passage, reading-1`
- **2015-06-03** Read third time. Passed. Ordered to the Senate. (Ayes 53. Noes 27. Page 1840.) `reading-3, passage, reading-1`
- **2015-06-03** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2015-06-18** Referred to Com. on E. & C.A. `referral-committee`
- **2015-07-01** From committee: Do pass. (Ayes 4. Noes 0.) (June 30). `committee-passage-favorable, committee-passage`
- **2015-07-02** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2015-09-02** Read third time and amended. Ordered to second reading. `reading-3, amendment-passage, reading-1`
- **2015-09-03** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2015-09-08** Read third time. Passed. Ordered to the Assembly. (Ayes 32. Noes 6. Page 2589.). `reading-3, passage, reading-1`
- **2015-09-08** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 10 pursuant to Assembly Rule 77.
- **2015-09-09** Assembly Rule 77 suspended. (Ayes 52. Noes 28. Page 2990.)
- **2015-09-09** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 52. Noes 24. Page 3024.). `committee-passage-favorable, amendment-passage`
- **2015-09-18** Enrolled and presented to the Governor at 4 p.m.
- **2015-10-10** Approved by the Governor. `executive-signature`
- **2015-10-10** Chaptered by Secretary of State - Chapter 730, Statutes of 2015.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/eeb694e7-3a73-43ff-b530-62cf00b54d62`. Confidence: reported (aggregated from official California legislature records).