St. Louis Charter Amendment Process and History

The St. Louis City Charter serves as the foundational governing document for the City of St. Louis, and amending it requires a formal multi-step process distinct from ordinary legislation. This page explains the scope of the charter amendment mechanism, how the process unfolds from proposal to ratification, the scenarios that most commonly trigger amendment efforts, and the boundaries that separate charter amendments from statutory changes or administrative actions. Understanding this process is essential for residents, civic organizations, and policymakers engaged with the St. Louis City Charter and broader questions of municipal governance.

Definition and scope

A charter amendment is a formal revision to the organic law of the City of St. Louis — the constitutional document that establishes government structure, distributes powers among branches, defines offices, and sets procedural requirements for municipal action. Unlike an ordinance, which is legislation passed by the St. Louis Board of Aldermen within limits already established by the charter, an amendment alters those limits themselves.

Missouri authorizes St. Louis, as a charter city operating under Article VI of the Missouri Constitution, to adopt and amend its own charter subject to state law. The legal authority derives from Missouri's constitutional home rule provisions, meaning the city has broad self-governance powers within the bounds of state statute. Charter changes that conflict with Missouri state law — including statutes passed by the General Assembly — are superseded by state authority and do not take effect regardless of local voter approval.

Scope coverage and limitations: This page covers the charter amendment process specific to the City of St. Louis, a city independent of any county since the 1876 separation described in detail at St. Louis City-County Separation. It does not apply to St. Louis County, which operates under a separate county charter and its own amendment procedures. Municipalities within St. Louis County — such as Clayton, Kirkwood, and Florissant — follow the amendment procedures of their individual municipal charters, not covered here. The Illinois municipalities of the broader metro region fall entirely outside this page's scope.

How it works

The amendment process follows a structured sequence established in the existing charter and Missouri law. The stages are:

  1. Proposal initiation — An amendment can be initiated through 2 distinct channels: (a) a resolution approved by a two-thirds majority of the full Board of Aldermen, or (b) a citizen petition carrying valid signatures equal to at least 10 percent of the qualified voters who cast ballots in the most recent gubernatorial election in the city, as provided under Missouri's home rule framework (Missouri Constitution, Article VI, §19).

  2. Charter commission review (for comprehensive revision) — When a full charter revision rather than a targeted amendment is pursued, the Board of Aldermen or a citizen petition may trigger the formation of a charter commission. The commission, composed of appointed residents, drafts a proposed document for public review.

  3. Publication and public notice — The proposed amendment or revised charter must be published and made available to voters for a defined period prior to election, ensuring public review before ratification.

  4. Ballot placement — Approved proposals are placed on the ballot for a regular or special municipal election. Voter turnout requirements and election scheduling follow Missouri election law administered by the St. Louis Election Authority.

  5. Voter ratification — A simple majority of voters participating in the election must approve the amendment for it to take effect. Unlike some states that require supermajorities for constitutional amendments, Missouri's home rule charter ratification requires majority approval.

  6. Filing and effective date — Upon voter approval, the amendment is filed with the Missouri Secretary of State and takes effect as specified in the amendment language or as prescribed by state law.

Common scenarios

Charter amendments in St. Louis have historically addressed 4 broad categories of change:

Structural reorganization — Adjusting the number of aldermanic wards, the composition of appointed boards, or the powers of executive offices. The aldermanic wards configuration has been subject to charter-level revision, most notably in the reduction from 28 to 14 wards approved by St. Louis voters in 2020, which took effect with the 2022 municipal elections.

Electoral and term provisions — Changing term lengths, term limits, or election timing for offices including the Mayor, Comptroller, and other elected positions. These provisions sit within the charter and cannot be altered by ordinance alone.

Finance and budget authority — Altering the composition or authority of the St. Louis Board of Estimate and Apportionment, which controls budget approval, requires charter-level action because the board's powers and membership are charter-defined.

City-county governance reforms — Proposals related to potential reunification or restructuring of the relationship between the City of St. Louis and St. Louis County represent the most complex category. The St. Louis City-County Reunification Debate has produced multiple amendment proposals over decades, including the "Better Together" initiative that appeared in various forms between 2018 and 2020.

Decision boundaries

Determining whether a proposed change requires a charter amendment — versus an ordinance, an executive order, or a state legislative action — depends on where the underlying authority is located in the governance hierarchy.

Charter amendment required when:
- The change alters the structure, powers, or composition of a charter-established office or body
- The change modifies voting thresholds, term limits, or eligibility rules for elected positions
- The change creates or eliminates a branch-level function defined in the organic document

Ordinance sufficient when:
- The action falls within powers already delegated by the charter to the legislative branch
- The change governs administrative procedure without altering structural authority
- The Board of Aldermen holds express authority to act under existing charter language

State legislative action required when:
- The proposed change would alter city-county boundary status, which under Missouri law (the 1876 separation mechanism) requires statewide legislative or constitutional action
- The change would conflict with a state statute that preempts local authority

The St. Louis initiative, referendum, and recall framework overlaps with the charter amendment process at the petition stage, but initiative ordinances — even those passed by citizen petition — cannot supersede or effectively amend charter provisions. That distinction is frequently misunderstood in public discourse around ballot measures.

For a full overview of how charter governance fits within the city's broader institutional architecture, the St. Louis Metro Authority home page provides orientation across the full range of civic topics covered in this reference.

References

Read Next

St. Louis City Charter: History and Key Provisions Louis City Charter: History and Key Provisions The St. St. Louis Board of Aldermen: Roles and Responsibilities ANA › United States Authority › Missouri State Authority › St. St. Louis City-County Separation: Origins and Impact Louis City-County Separation: Origins and Impact The legal and governmental separation between the City of St.