South Dakota Legislature: Senate, House, and How Laws Are Made

The South Dakota Legislature is the state's bicameral lawmaking body, composed of a 35-member Senate and a 70-member House of Representatives. This page documents the structural organization of both chambers, the procedural sequence through which proposed legislation becomes state law, the constitutional boundaries governing legislative authority, and the points of tension inherent in the South Dakota lawmaking process. It serves as a reference for researchers, professionals, and members of the public navigating the South Dakota legislative branch.

• Definition and scope
• Core mechanics or structure
• Causal relationships or drivers
• Classification boundaries
• Tradeoffs and tensions
• Common misconceptions
• Checklist or steps (non-advisory)
• Reference table or matrix

Definition and scope

The South Dakota Legislature operates under Article III of the South Dakota Constitution, which vests all legislative power of the state in the General Assembly — the formal designation for the combined Senate and House. The Legislature's authority is plenary within the bounds set by the state constitution and the United States Constitution, meaning it can legislate on any subject not explicitly prohibited or preempted.

The Legislature convenes annually in Pierre, the state capital. Regular sessions begin on the second Tuesday of January (SDCL § 2-1-1) and are constitutionally limited to 40 legislative days in odd-numbered years and 35 legislative days in even-numbered years (South Dakota Constitution, Art. III, § 7). Special sessions may be convened by the Governor or by petition of two-thirds of the membership of each chamber.

Scope and coverage limitations: This page addresses state-level legislative structure and procedure in South Dakota. It does not cover federal congressional representation for South Dakota, tribal legislative bodies (which operate under separate sovereign authority — see South Dakota Tribal Governments), or the ordinance-making authority of municipal and county governments. Municipal legislative processes are addressed separately under South Dakota Municipal Government.

Core mechanics or structure

Chamber composition

The Senate consists of 35 members; the House of Representatives consists of 70 members. South Dakota is divided into 35 legislative districts, each electing 1 senator and 2 representatives. All legislators serve 2-year terms. Under South Dakota law (initiated measure enacted in 1992 and codified at SDCL § 2-1A), legislators are subject to term limits: no person may serve more than four consecutive terms in the Senate or four consecutive terms in the House, though service in one chamber does not count against limits in the other.

Leadership structure

Senate: The presiding officer is the President of the Senate, a position held ex officio by the Lieutenant Governor. Day-to-day management falls to the President Pro Tempore, elected by Senate members. The Majority Leader and Minority Leader coordinate floor activity for their respective caucuses.

House: The Speaker of the House, elected by House members, presides. The Speaker Pro Tempore serves in the Speaker's absence. Majority and Minority Leaders parallel the Senate structure.

Committee system

Both chambers route legislation through standing committees before floor consideration. The Senate maintains committees including Agriculture and Natural Resources, Appropriations, Commerce and Energy, Education, Health and Human Services, Judiciary, Local Government, State Affairs, and Taxation. The House operates a parallel committee structure. The Joint Appropriations Committee, composed of members from both chambers, holds jurisdiction over the state budget and spending bills.

Committee chairs are appointed by the President Pro Tempore in the Senate and by the Speaker in the House. Committees hold the power to table bills — effectively killing them without a floor vote — a mechanism that concentrates significant gatekeeping authority in committee leadership and the appointing presiding officers.

Causal relationships or drivers

Several structural factors shape the volume and character of legislation produced each session.

Session length constraints create pressure to prioritize. With a hard cap of 40 legislative days in odd-numbered years, bills introduced late in a session face near-certain death from procedural attrition rather than substantive opposition. The deadline structure rewards bills that clear committee early.

One-party dominance in the Legislature has characterized South Dakota since the late 20th century. Republicans have held supermajority-level control in both chambers for extended periods, meaning that intraparty caucus negotiations often determine legislative outcomes before floor votes occur. This shifts the effective decision-making forum from the chamber floor to party caucus meetings.

Initiated measures and referendums create a parallel legislative track outside the Legislature. South Dakota voters can propose and enact statutory law directly through the initiative process, and can refer legislative acts to popular vote. This constitutional mechanism (Art. IV, § 1 of the South Dakota Constitution) means the Legislature does not hold exclusive claim to the state's legislative output.

Executive influence operates through the Governor's line-item veto authority over appropriations bills and veto power over general legislation. An override requires a two-thirds vote of the members-elect in each chamber — 24 Senate votes and 47 House votes.

Classification boundaries

South Dakota legislative output falls into distinct legal categories:

Session laws are the raw enacted form of legislation as passed in a given session, published by the Secretary of State.

Codified statutes are session laws organized by subject matter into the South Dakota Codified Laws (SDCL), maintained by the Legislature's Revisor of Statutes. The SDCL is the authoritative compilation of permanent, general state law.

Joint resolutions are used for proposing constitutional amendments, ratifying federal constitutional amendments, or expressing formal legislative positions. They do not have the force of statutory law.

Concurrent resolutions are adopted by both chambers and address housekeeping matters or formal legislative expressions but carry no statutory force.

Simple resolutions are internal to a single chamber and address procedural or ceremonial matters.

Appropriations bills constitute a distinct class by practical necessity — the annual general appropriations act funds state government operations and must pass each session. Budget bills originate in the Joint Appropriations Committee and follow an accelerated timeline relative to general legislation.

Tradeoffs and tensions

Speed versus deliberation: The constitutionally compressed session schedule limits the time available for public testimony, interim study, and amendment refinement. Bills of significant complexity — particularly those touching on tax structure or criminal code revisions — face the same procedural clock as routine legislation.

Committee power versus democratic floor access: The committee tabling mechanism allows a small group of appointed members to prevent floor votes on bills that may have majority support in the full chamber. This structure privileges leadership-aligned priorities and can frustrate minority-party or minority-faction legislators.

Initiated measure supremacy versus legislative revision: Statutes enacted by voter initiative cannot be amended or repealed by the Legislature for two years following enactment, per SDCL § 2-1-12. After that period, the Legislature may amend initiative-passed statutes, creating periodic conflict between legislative majorities and voter-expressed preferences embedded in law.

Term limits versus institutional memory: The 1992 term limits amendment cycles out experienced legislators on a predictable schedule, concentrating long-term institutional knowledge in agency staff, lobbyists, and executive branch officials who are not subject to term limits.

Common misconceptions

Misconception: The Governor introduces legislation. The Governor does not hold formal bill introduction authority in the Legislature. The Governor's Office may draft and advocate for legislation, but introduction requires a legislative sponsor. The Governor's primary formal legislative role is in signing or vetoing bills after passage.

Misconception: All bills receive a floor vote. Bills tabled in committee do not reach the floor. A bill can be introduced, assigned to committee, and killed by committee action without the full chamber casting any vote on its merits. The majority of introduced bills do not become law.

Misconception: The Legislature can override any initiated measure. The two-year restriction on amending or repealing initiated statutes is a binding legal constraint, not a convention. Legislative action contrary to this restriction within the two-year window is impermissible under SDCL § 2-1-12.

Misconception: The Lieutenant Governor votes in the Senate. The Lieutenant Governor, as President of the Senate, does not vote on legislation except to break a tie — a structural arrangement parallel to the U.S. Vice President's role in the Senate.

Misconception: Special sessions can address any topic. Special sessions convened by the Governor are limited to the subjects specified in the Governor's proclamation calling the session (South Dakota Constitution, Art. IV, § 3).

Checklist or steps (non-advisory)

Sequence: How a bill moves through the South Dakota Legislature

1. Bill drafting — A legislator or legislative committee works with the Legislative Research Council to draft bill language.
2. Introduction — The bill is introduced in either the Senate or House; appropriations bills typically originate in the Joint Appropriations Committee process.
3. First reading — The bill is read by title only and assigned to a standing committee by the presiding officer.
4. Committee hearing — The assigned committee schedules a hearing; public testimony may be taken; amendments may be adopted.
5. Committee action — The committee votes to pass the bill, pass with amendments, defer to the 41st day (effectively tabling), or table outright.
6. Second reading — If passed from committee, the bill is placed on the calendar and read a second time.
7. Floor debate and amendment — The full chamber debates the bill; amendments from the floor may be offered and voted upon.
8. Third reading and final vote — The bill is read a third time and voted on for passage; a simple majority of members present is required for most legislation.
9. Transmission to the second chamber — A bill passed by one chamber is transmitted to the other, where steps 3 through 8 repeat.
10. Conference committee (if needed) — If the second chamber amends the bill and the originating chamber does not concur, a conference committee of members from both chambers reconciles the differences.
11. Enrollment — The enrolled bill is signed by the presiding officers of both chambers.
12. Gubernatorial action — The Governor has five days (excluding Sundays) to sign, allow to become law without signature, or veto the bill while the Legislature is in session; the veto period extends to 15 days after adjournment for bills transmitted at or near session end.
13. Veto override (if applicable) — A two-thirds vote of members-elect in each chamber overrides the veto.
14. Publication — Enacted laws are published as session laws and subsequently codified in the SDCL by the Revisor of Statutes.

Reference table or matrix

South Dakota Legislature: Key structural parameters

Bill classification summary

For a broader orientation to South Dakota's governing structure, the South Dakota Government home provides access to executive, judicial, and administrative branch reference pages. The role of the South Dakota Constitution in delimiting legislative authority is documented in its own reference section. Administrative agencies that implement enacted statutes — including rulemaking processes — are catalogued under South Dakota State Agencies and Departments. Legislative acts affecting Hughes County and the Pierre metropolitan area intersect directly with the Legislature's geographic seat of operations.

References

• South Dakota Legislature — Official Site
• South Dakota Constitution, Article III (Legislative Department)
• South Dakota Codified Laws (SDCL) — Full Text
• SDCL § 2-1-1 — Legislative session commencement
• SDCL § 2-1-12 — Limitations on legislative amendment of initiated statutes
• SDCL Chapter 2-1A — Legislative term limits
• South Dakota Secretary of State — Session Laws
• South Dakota Legislative Research Council