Oregon Governance Atlas · edition dated August 31, 2026
How power works in Oregon.
Meet the people and institutions that decide what becomes law, follow the bargains behind major decisions, and see how different parts of Oregon shape the result.
Every claim here sits next to its source: a chamber rule, a roll call, a preserved bill text, a court opinion. Where the record is silent, the page says so once and the research queue holds the detail.
Institutional Studies
Investigations connecting legislative decisions to funding, delivery, and the way institutions work. Begin with transportation.
Three ways to start
Understand the legislature
A guided course: fifteen minutes to orient, two hours for practical literacy, three with the investigations.
Start the courseExplore your part of Oregon
Districts, the members who represent them, the committees they chair, and the region definitions you can inspect.
Find your districtFollow a decision
5 decision histories with the available referrals, amendments, roll calls, funding records, and later developments.
Choose a caseOne picture to keep
Who controls the next step
A bill passes through a short chain of offices, and at each link one person or a small number can hold it. The chain is written in the chamber rules. Select an office to see its authority, what constrains it, and where the record shows the power being used.
Full diagram and every officeOffices
Same content as a table
| Office | Formal authority | What constrains it | Documented use | Sources |
|---|---|---|---|---|
| Legislative Counseldrafts every measure | Drafts all measures and amendments, gives legal opinions, publishes the statutes, and reviews agency rules; the office is selected by the Legislative Counsel Committee under ORS 173.200. | Drafts only on request from members, committees, caucuses, or approved agency requests; Senate drafting requests in a long session close on a fixed date (5:00 p.m. on January 17, 2025) with limited exceptions; the House cut off drafting after the Friday following the organizational session, with five priority requests per member. | HB 2017 was introduced as a 23-line study bill; the 7,800-line package arrived as the committee's -10 amendment drafted by Legislative Counsel | Member Guidebook 2025; Rules of the Senate, 83rd Legislative Assembly (adopted January 13, 2025; amended June 23, 2025 and February 2, 2026); Rules of the House of Representatives, 83rd Legislative Assembly (adopted January 13, 2025) |
| Member or committeeintroduces | Any member, caucus, or committee may introduce measures; the presiding officers and Ways and Means may introduce after deadlines. | Introduction deadlines and per-member limits (five late requests per senator; five priority requests per representative) ration late bills; a measure must carry a summary and fiscal transmittal before it is accepted at the desk. | Both 2021 redistricting bills carried the Senate President as chief sponsorEvery 2013 special-session bill was introduced by the single joint committee | Rules of the Senate, 83rd Legislative Assembly (adopted January 13, 2025; amended June 23, 2025 and February 2, 2026); Rules of the House of Representatives, 83rd Legislative Assembly (adopted January 13, 2025) |
| Speaker of the Housenames committees, refers bills | Elected by a majority of members elected; appoints every committee and its chairs and vice-chairs; refers each measure within seven calendar days (five in 2026), may add a subsequent referral, and may rescind one at a committee's request. | Committee membership must reflect the minority's share of the House and follow consultation with caucus leaders; 31 members can withdraw a bill from committee; 40 votes suspend a rule; the Speaker serves at the pleasure of 60 members. | March 3, 2017: HB 2017 referred to the joint transportation committee two days after first readingSeven motions to refer or postpone HB 2002 failed on the House floor on May 1, 2023, before passage | Rules of the House of Representatives, 83rd Legislative Assembly (adopted January 13, 2025); Member Guidebook 2025 |
| Senate Presidentnames committees, refers bills | Elected by a constitutional majority (16) at the organizational session; establishes and appoints all committees and chairs (except Conduct); refers each measure within seven calendar days and may add one additional committee plus a fiscal referral; sits ex officio on every committee with a vote. | A constitutional majority (16) can withdraw a measure from committee; twenty votes suspend a rule; a majority of a committee can compel a hearing; the President cannot act without a quorum of twenty. | September 20, 2021: SB 881 and SB 882 referred to the Senate Redistricting Committee and passed the same day under suspended rulesJuly 6, 2017: HB 2017 referred, reported, and passed in the Senate in one day | Rules of the Senate, 83rd Legislative Assembly (adopted January 13, 2025; amended June 23, 2025 and February 2, 2026); Member Guidebook 2025 |
| House committee chairschedules hearings | Committees meet at the call of the chair; the chair decides whether and when a measure gets a public hearing or a work session, and a measure not scheduled dies with the deadline. | A written request signed by a majority of the committee forces a hearing or work session within five business days; amendment text must be posted online at least four hours before action (one hour near adjournment); the Ways and Means or Revenue committee cannot change a bill's substance beyond fiscal effect without the policy chair's consent; two dissenting members can file a minority report. | HB 2017: informational meeting May 31, public hearings June 5 to 7, work session July 1, 2017 | Rules of the House of Representatives, 83rd Legislative Assembly (adopted January 13, 2025) |
| Senate committee chairschedules hearings | Committees meet at the call of the chair with 48 hours' public notice in a long session (24 in short and special sessions); the chair sets the agenda and time-certain items. | A majority of members can compel a hearing or work session; final action needs a majority of the membership; text must be public online for one hour before action; minority reports need two dissenters and cannot be filed in joint committees; the President must approve meetings while the Senate is in session. | October 1, 2013: the joint special-session committee moved all five package bills with 20 aye votes and no nays | Rules of the Senate, 83rd Legislative Assembly (adopted January 13, 2025; amended June 23, 2025 and February 2, 2026) |
| Ways and Meansmoney and positions | Any measure that appropriates, allocates, or requires spending may be referred to the Joint Committee on Ways and Means (or Tax Expenditures, or a revenue committee); its reports carry the Legislative Fiscal Officer's fiscal statement and the budget notes it adopts. | Final action on a joint committee requires a majority of the Senate members appointed; it may not amend substance beyond fiscal effect without the policy chair's consent in the House; its co-chairs are appointed by the presiding officers. | HB 2020 (2019) and HB 2002 (2023) each passed through Ways and Means before the Senate walkouts stopped the Senate floor | Rules of the Senate, 83rd Legislative Assembly (adopted January 13, 2025; amended June 23, 2025 and February 2, 2026); Rules of the House of Representatives, 83rd Legislative Assembly (adopted January 13, 2025); Member Guidebook 2025 |
| House floor40 for a quorum · 31 to pass | A quorum of forty members transacts business; thirty-one votes pass an ordinary bill and thirty-six a revenue-raising bill; no bill is amended on the House floor, so the committee text is the vehicle. | Six members can demand a Call of the House; fewer than forty present can only adjourn from day to day and compel attendance; ten unexcused absences disqualify a member from the next term under Article IV, section 15 as amended by Measure 113. | July 5, 2017: HB 2017 passed the House 39 to 20 with rules suspended for third readingFebruary 25 to March 5, 2020: the House lacked a quorum for the end of the short session | Rules of the House of Representatives, 83rd Legislative Assembly (adopted January 13, 2025); Oregon Constitution (current text published by Legislative Counsel); Measure 113 (November 8, 2022): legislators with ten unexcused absences disqualified from the next term |
| Senate floor20 for a quorum · 16 to pass | A quorum of twenty; a constitutional majority of sixteen passes ordinary measures, concurs, and confirms; eighteen for revenue-raising bills; twenty to suspend a rule. | Eleven senators can deny a quorum when all seats are filled; three members can demand a call of the Senate; the journal records every member as present, excused, or absent; ten unexcused absences carry the Measure 113 consequence. | May 3 to June 14, 2023: no Senate quorum for 43 calendar days; business resumed June 15October 2, 2013: five package bills passed with different coalitions on the same afternoon | Rules of the Senate, 83rd Legislative Assembly (adopted January 13, 2025; amended June 23, 2025 and February 2, 2026); Oregon Constitution (current text published by Legislative Counsel); Journal of the Senate, 2023 regular session |
| Both chambers agreeconcur, or conference | The originating chamber votes to concur in the other chamber's amendments (a constitutional majority) or refuses, after which the presiding officers appoint conferees who may propose amendments only within the issue between the houses. | A concurrence vote waits until the next session day in a long session or one hour in a short or special session; a conference report cannot be amended or referred. | September 27, 2021: the Senate concurred in House amendments to the congressional map bill and repassed it 18 to 6June 21, 2023: the House concurred in Senate amendments to HB 2002, 35 to 12 | Rules of the Senate, 83rd Legislative Assembly (adopted January 13, 2025; amended June 23, 2025 and February 2, 2026); Rules of the House of Representatives, 83rd Legislative Assembly (adopted January 13, 2025) |
| Governorsign, veto, or let become law | Signs or vetoes enrolled bills within five days while the legislature sits or thirty days after adjournment, and may veto single items in appropriation bills; calls special sessions and proposes the budget. | A veto is overridden by two-thirds of members present in each chamber; the governor cannot amend; the legislature may itself convene a special session. | August 18, 2017: HB 2017 signed; chapter 750, effective October 6, 2017September 23, 2013: the governor called the three-day special session around a negotiated package | Oregon Constitution (current text published by Legislative Counsel); Atlas session account: The grand bargain and its four different afterlives (2013 special session) |
| Votersreferendum, initiative, referral | Can refer an enacted law to the ballot by petition, enact statutes and constitutional amendments by initiative, and approve or reject legislative referrals. | Signature thresholds, timing, and single-subject rules; an emergency clause puts a law into immediate effect and cannot be attached to tax measures; a referendum is decided at the next election. | January 23, 2018: Measure 101 retained the 2017 health-care assessments after a referendum petitionNovember 8, 2022: Measure 113 approved 1,292,127 to 599,204, attaching a consequence to ten unexcused absences | Oregon Constitution (current text published by Legislative Counsel); Measure 113 (November 8, 2022): legislators with ten unexcused absences disqualified from the next term; Atlas session account: Oregon’s 2017 session built governing systems meant to outlast the biennium |
| Courtsreview | Decide whether enacted laws and ballot measures satisfy the constitution and how their words apply. | Act only on cases brought before them, within the record and the questions presented. | April 30, 2015: Moro v. State restored accrued pension cost-of-living adjustments that the 2013 package had cut2024: Knopp v. Griffin-Valade fixed the meaning of Measure 113's next-term disqualification | Moro v. State of Oregon, 357 Or 167 (2015); Knopp v. Griffin-Valade, 372 Or 1 (2024) |
| The enacted laweffective 90 days after adjournment, or at once with an emergency clause | Once signed, or unsigned after five days in session or thirty after adjournment, a bill is law. It takes effect ninety days after the session ends unless it declares an emergency, in which case it takes effect on signing. | Voters can suspend it by referendum petition within the ninety days (unless it carries an emergency clause) and can rewrite it by initiative; courts decide whether it satisfies the constitution and what its words mean; the next Assembly can amend or repeal it. | HB 2017 became chapter 750 and took effect October 6, 2017; the 2013 tax bill, denied an emergency clause by the constitution, waited until January 1, 2014 | Oregon Constitution (current text published by Legislative Counsel) |
| Agencies and local governmentsturn the law into practice | Write administrative rules, award grants and contracts, hire the positions the budget authorizes, and deliver or withhold the program in practice. | Bound by the enacted text, the appropriation, budget notes, Legislative Counsel review of rules, audits, and later legislative revision. | The 2017 transportation package delegated project delivery and revenue phase-ins to the Department of Transportation and the Transportation Commission; delivery evidence through 2026 is still being assembled | HB 2017 A (2017) Staff Measure Summary, Joint Committee on Transportation Preservation and Modernization; Atlas session account: Oregon’s 2017 session built governing systems meant to outlast the biennium |
Three decisions, reconstructed from the record
Start with a real exercise of power
2017
A 23-line placeholder became a transportation package
HB 2017 was introduced as a study bill. One committee amendment on July 1 supplied the whole settlement; the House passed it 39 to 20 and the Senate 22 to 7 the next day. Both texts are preserved and compared.
2013
Five bills, three days, four different afterlives
Pension cuts, tax changes, new school money, and seed preemption passed on October 2, 2013, each with a different coalition. The Supreme Court undid the central concession eighteen months later.
2019 to 2023
When eleven senators can stop the Senate
The two-thirds quorum written in 1859 became a veto by absence. Voters answered with Measure 113 in 2022; the Supreme Court fixed its meaning in 2024.
Sessions, constitution, and sources
Sessions
Every legislative and formative session since 1841, with a written account for 49 of them and an honest status for the rest.
Session catalog →Constitution
Every attempt to change the Oregon Constitution since 1857, adopted or not, with results and verified text where the record allows.
Constitutional history →Sources
Rules, journals, bill texts, staff analyses, court opinions, and official datasets, each with a preserved copy and an exact locator.
Source library →Statements about officeholders and operative rules describe the edition dated August 31, 2026. Publication status, methods, changes, and the retrieval queue are in the research section.