---
type: "Bill"
title: "St. Mary's County - Metropolitan Commission"
description: "St. Mary's County - Metropolitan Commission"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2026"
identifier: "HB 600"
citation: "Maryland HB 600 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["St. Mary's County Delegation"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2026-01-28"
last_action: "2026-04-28"
source: "openstates"
source_identifier: "ocd-bill/9bae3c17-6078-45be-af47-a22c8fea1417"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0600?ys=2026RS"
source_hash: "06c413e66498e572560afce886bee634b74eef29a9fb94f121072a63e31134bd"
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-md"]
---

# Maryland HB 600 (2026) — St. Mary's County - Metropolitan Commission

## Version chain

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

1. **Chapter - St. Mary's County - Metropolitan Commission** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/Chapters_noln/CH_349_hb0600t.pdf)
2. **First - St. Mary's County - Metropolitan Commission** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/hb/hb0600f.pdf)
3. **Third - St. Mary's County - Metropolitan Commission** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/hb/hb0600t.pdf)

## Votes

- On Third Reading — **34–0** (pass) · upper
- On Third Reading — **131–0** (pass) · lower

## Sponsors

- St. Mary's County Delegation — primary (person)

## Timeline

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

- **2026-01-28** First Reading Government, Labor, and Elections `referral-committee`
- **2026-02-03** Hearing 2/12 at 2:00 p.m.
- **2026-03-20** Favorable Report by Government, Labor, and Elections `committee-passage-favorable`
- **2026-03-20** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2026-03-20** Third Reading Passed `passage`
- **2026-03-23** Referred Budget and Taxation Judicial Proceedings `referral-committee`
- **2026-03-25** Hearing 4/02 at 1:00 p.m. (Budget and Taxation)
- **2026-04-08** Favorable Report by Budget and Taxation `committee-passage-favorable`
- **2026-04-08** Favorable Adopted `committee-passage-favorable`
- **2026-04-08** Second Reading Passed
- **2026-04-09** Third Reading Passed `passage`
- **2026-04-10** Returned Passed
- **2026-04-28** Approved by the Governor - Chapter 349 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9bae3c17-6078-45be-af47-a22c8fea1417`. Confidence: reported (aggregated from official Maryland legislature records).