The people who control the next step

Start with a fact that surprises people who follow national politics: in Oregon nobody amends a bill on the House floor. House Rule 5.40 says so in one sentence. Whatever text a committee sends out is the text the sixty representatives vote on. That single rule moves most of the real drafting, and most of the bargaining, into committee rooms and the offices that decide who sits in them.[1]

The chain begins before a bill has a number. Legislative Counsel, a permanent nonpartisan office selected by a joint committee, drafts every measure and every amendment that the Assembly considers. Members cannot file whatever they like whenever they like: in the 2025 long session, senators had until 5:00 p.m. on January 17 to submit drafting requests without limit, with five late requests each afterward, and representatives had five priority requests each once the general drafting window closed. Deadlines like these are the first form of agenda control, because a proposal that misses them needs a presiding officer's permission or a committee's sponsorship to exist at all.[2][3][1]

Referral: the presiding officer chooses the room

After first reading, the measure goes to the Speaker's desk or the President's desk. Each presiding officer has seven calendar days to refer it to a committee, may add a second committee, and, if the bill spends or raises money, may add a fiscal referral to Ways and Means or a revenue committee. The choice of committee is the choice of chair, and the chair decides whether the bill is ever heard. The House rule for 2026 shortened the referral window to five days; the power did not change.[1][3]

The presiding officers also built the committees. The Speaker appoints every member, chair, and vice-chair of every House and joint committee for session and interim; the President does the same in the Senate and sits ex officio, with a vote, on every Senate committee except Conduct. The House rules add two limits the Senate rules do not: minority-party seats on committees must be at least proportional to the minority's share of the House, and the Speaker must survey members' interests and consult the caucus leaders in good faith.[1][3]

The chair decides whether there is a hearing

Committees meet at the call of the chair. The chair sets the agenda, decides which bills get a public hearing, and decides which get a work session, the meeting where amendments are adopted and the committee votes to send a bill on. A bill the chair never schedules dies quietly when the session's deadlines pass, and the record will show only that it was referred. Both chambers give the rest of the committee a check: a written request signed by a majority of members forces the chair to schedule a hearing or work session, within five business days in the House.[1][3]

The rules force the committee's work into the open, but only just. Amendment text must be posted online at least one hour before a Senate committee acts on it, four hours in the House, and in the last days of a session the House drops to one hour too. Meetings are sound recorded, and the recording log must list attendance, witnesses, and every vote. Those logs, and the amendments they refer to, are the raw material of the decision histories elsewhere on this site.[3][1]

The floor: counts that decide

Once a committee reports a bill, the floor has three numbers. A quorum is forty representatives or twenty senators, two-thirds of each chamber. Passage needs a constitutional majority of members elected, thirty-one and sixteen, not a majority of those present. Bills that raise revenue need three-fifths, thirty-six and eighteen. Suspending a rule, which is how a chamber reads a bill a second and third time on the same day, needs forty votes in the House and twenty in the Senate.[1][3][4]

Because the quorum is two-thirds rather than a bare majority, a minority large enough can stop the floor by leaving it. Eleven senators can deny a quorum when all thirty seats are filled. The Senate rules answer absence with a call of the Senate on the demand of three members, which closes the doors and sends the Sergeant at Arms for anyone not excused; the House has the same device on the demand of six. Neither can produce a member who has left the building. Chapter 7 follows what happened when senators did.[3][1]

A member who dissents in committee has one more instrument on the floor. Two members who were present and voted against the committee report can file a minority report, and the carrier can move to substitute it for the committee's text before the bill is read a third time. Joint committees allow no minority reports, which is one reason large packages are routed through them.[1][3]

The second chamber, the governor, and everyone after

A bill that passes one chamber starts the chain again in the other: first reading, referral, committee, floor. If the second chamber amends it, the first must concur by a constitutional majority or refuse, and refusal sends the bill to a conference committee appointed by both presiding officers that may propose changes only within the issue between the houses. Then the governor signs, vetoes, or lets the bill become law; an override needs two-thirds of the members present in each chamber.[3][1][4]

None of that ends the story. Voters can refer an enacted law to the ballot unless it carries an emergency clause, and an emergency clause cannot be attached to a tax measure. Courts decide what the words mean and whether the constitution allows them. Agencies write the rules, hire the positions the budget funds, and deliver or fail to deliver the program. The rest of this course follows those later stages through real cases, because the record of a signature tells you what was promised, not what happened.[4] (interpretation)