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Chapter 1

The Legislature

Who’s in charge, how caucuses and committees work, what a session looks like, and the nine steps from idea to law.

The basics

150

legislators in two chambers. Each Senate district is made of two House districts.

100

House members (Representatives), elected every 2 years.

50

Senate members (Senators), 4-year terms; half are up every 2 years.

2 years

per General Assembly, each numbered. The 92nd runs 2027–2028. Each year is one session.

When they meet

Sessions start the second Monday in January. Lawmakers aim to finish in about 110 days the first year and 100 the second; that’s when their daily expense pay (per diem) stops, though sessions can run longer. The Governor can call a special session any time.

Year one vs. year two

A bill keeps its number for the whole General Assembly. Bills still alive after the first session carry over to the second. When the General Assembly ends, every unfinished bill dies and has to start over.

Who runs things

Each chamber is run by the party with the most seats. Leaders are chosen by their party’s members right after each November election.

Speaker of the HouseThe House’s top officer, elected by all House members but in practice chosen by the majority party. Presides over debate, decides which committee gets each bill, and appoints committee members and chairs. The single most powerful person in the House.
Speaker pro temporePresides when the Speaker steps away.
President of the SenateThe Senate’s presiding officer, elected by the Senators. Runs floor debate. (Iowa’s Lieutenant Governor stopped presiding in the 1990s.)
President pro temporePresides when the Senate President is away.
Majority LeaderLeads the party with more seats in a chamber. Decides which bills come up for debate and when. In the Senate, the Majority Leader also appoints committees and refers bills, so it’s that chamber’s most powerful job.
Minority LeaderLeads the party with fewer seats: sets its strategy, speaks for it in debate, and negotiates with the majority.
Assistant leaders and whipsHelp their leader count votes and keep the caucus together.
Committee chairRuns a committee and decides which bills it takes up. A chair who won’t schedule a bill can stop it without a vote.
Ranking memberThe minority party’s lead member on a committee.

Who works there

Chief Clerk of the House / Secretary of the SenateRun each chamber’s daily business: the Journal, the bill records, the calendars, and lobbyist registration.
Legislative Services Agency (LSA)Nonpartisan staff who draft every bill and amendment, write fiscal notes and explanations, and track the budget.
Caucus staffPartisan staff who work for each party’s caucus: research, bill analysis, communications.
Clerks and secretariesEach legislator has a session clerk or secretary who handles their schedule and messages.
Sergeant-at-ArmsKeeps order in the chamber and galleries.
PagesHigh school students who spend a session running messages and helping on the floor.

Caucuses: where a lot gets decided

A caucus is every member of one party in one chamber: House Republicans, House Democrats, Senate Republicans, Senate Democrats. During session each caucus meets privately, usually every day before floor debate, to go over the bills coming up, decide positions, and count votes.

  • They’re closed to the public. Iowa’s open meetings law doesn’t apply to political caucuses.
  • Most deals happen there. If the majority caucus doesn’t have the votes for a bill, leaders usually won’t bring it to the floor at all, so few bills fail on the floor.
  • Leaders are elected there. Right after each November election, each caucus picks its leaders for the next General Assembly. The majority caucus’s choice for Speaker is then formally elected on opening day.

(Iowa also uses “caucus” for the neighborhood party meetings where Iowans start the presidential nominating process. That’s a different thing.)

Committees

Standing committeesThe permanent committees in each chamber, by subject: Education, Judiciary, Agriculture and so on. Every bill goes to one.
Appropriations subcommitteesJoint House-Senate panels, one per area of the budget, that write the spending bills.
Ways and MeansEach chamber’s tax committee.
Government OversightReviews how state agencies operate. Its bills are exempt from the funnel.
Ethics committeesHandle complaints about legislators’ conduct.
Conference committeeA temporary group from both chambers that settles the differences on one bill.
Interim committeesStudy a topic between sessions and may recommend bills for next year.
Legislative CouncilLeaders of both chambers and parties. It runs the Legislature between sessions and approves interim studies.

A session, start to finish

  1. 1

    December: getting ready

    The Revenue Estimating Conference forecasts state revenue. State agencies and legislators prefile bills so they’re ready on day one.

  2. 2

    January: opening day and big speeches

    The session opens the second Monday in January. In the first weeks, the Governor gives the Condition of the State (and proposes a budget), the Chief Justice gives the Condition of the Judiciary, and the head of the Iowa National Guard gives the Condition of the Guard.

  3. 3

    February–March: committee season

    Hundreds of subcommittee meetings. The first funnel hits in early March.

  4. 4

    March–April: floor season

    Long days of debate. The second funnel hits in late March or early April. A new revenue estimate in March sets the final budget.

  5. 5

    April–May: the budget and the deals

    Leaders agree on spending targets, the budget bills move, and the big compromises come together, often as strike-everything amendments.

  6. 6

    Sine die

    The session ends, often late at night. Then the Governor’s 30-day signing period runs.

A typical session day: caucus meetings in the morning, floor debate, subcommittees and committees squeezed in around it. On weekends many legislators hold forums back home, sometimes called “eggs and issues” breakfasts, where anyone can ask questions.

Between sessions

From late spring to January the Legislature is mostly out, but not idle. Interim committees study issues, the Legislative Council handles business, and the Governor can call a special session (as on October 2, 2026). After a November election, new members and leaders are chosen, and new laws from the spring take effect July 1.

How a bill becomes law

Every bill follows the same path. Most don’t reach the end.

  1. 1

    Someone has an idea

    A legislator, a committee, the Governor or a state agency asks for a bill. The Legislative Services Agency writes it in legal language.

  2. 2

    It’s introduced

    It gets a number like HF 437 (House File) or SF 519 (Senate File) and goes to a committee. Committees can start with a study bill (HSB/SSB), which gets a new number if it advances.

  3. 3

    A subcommittee takes a first look

    Usually three legislators hold a public meeting and recommend passing it, changing it, or letting it go.

    You can attend and speak
  4. 4

    The full committee votes

    If a majority approves, the bill is placed on the chamber’s calendar for debate. If not, it usually stops here.

    First funnel
  5. 5

    The whole chamber debates and votes

    Members can offer amendments. Passing takes a majority of all members, not just those present: 51 in the House, 26 in the Senate.

  6. 6

    The other chamber does it all again

    Subcommittee, committee and floor vote in the second chamber.

    Second funnel
  7. 7

    Both chambers agree on one version

    If the second chamber changed it, the first must accept those changes (concur). If they can’t agree, a conference committee from both chambers works out a compromise.

  8. 8

    The Governor decides

    Sign it, veto it, or for spending bills, veto individual items (an item veto). During session the Governor has three days, Sundays excepted, or the bill becomes law without a signature. For bills received in the last three days of session or after it ends, the Governor has 30 days, and doing nothing counts as a veto. Two-thirds of each chamber (67 and 34) can override a veto.

    Funnel’s “Waiting on the Governor” tracks these deadlines
  9. 9

    It becomes law

    Most new laws take effect July 1. Some take effect immediately (“effective upon enactment”), and some apply to dates in the past (“retroactive applicability”).

The budget

The state budget isn’t one bill. It’s about a dozen appropriations bills, one per area (education, health and human services, justice and so on), plus a standings bill and usually a tax bill, most passed in the last weeks of session.

A nonpartisan Revenue Estimating Conference forecasts how much money the state will take in, and state law limits spending to 99% of that estimate. The fiscal year runs July 1 to June 30.

Spending and tax bills are exempt from the funnel deadlines, which is why the biggest bills of the year often move last.

Next chapter

Bills & amendments →

What HF, SSB and HJR mean, how bills change, and how the Constitution is amended.