Public institutional biography · as recorded through August 31, 2026
Mark Hass
SenateDistrict 14DemocraticSenator
Sessions served
19
regular and special
On rosters
2007–
still serving at the cutoff
Leadership offices
0
none recorded
Chair or vice-chair roles
27
58 other memberships
Service, session by session
colour = party · one square per session- 2008 SpeSD 14
- 2009RSD 14
- 2010 SpeSD 14
- 2011RSD 14
- 2012RSD 14
- 2012S1SD 14
- 2013RSD 14
- 2013S1SD 14
- 2014RSD 14
- 2015RSD 14
- 2016RSD 14
- 2017RSD 14
- 2018RSD 14
- 2018S1SD 14
- 2019RSD 14
- 2020RSD 14
- 2020S1SD 14
- 2020S2SD 14
- 2020S3SD 14
Every roster row (19 plus 7 interim)
| Session | Chamber | District | Party | Roster title | Dates |
|---|---|---|---|---|---|
| 2008 Special Session | Senate | 14 | Democratic | Senator | Feb 4, 2008 to open |
| 2009 Regular Session | Senate | 14 | Democratic | Senator | Jan 12, 2009 to Jun 29, 2009 |
| 2010 Special Session | Senate | 14 | Democratic | Senator | Feb 1, 2010 to Feb 25, 2010 |
| 2011 Regular Session | Senate | 14 | Democratic | Senator | Jan 10, 2011 to Jun 30, 2011 |
| 2012 Regular Session | Senate | 14 | Democratic | Senator | Feb 1, 2012 to Mar 5, 2012 |
| 2012 1st Special Session | Senate | 14 | Democratic | Senator | Dec 14, 2012 to open |
| 2013 Regular Session | Senate | 14 | Democratic | Senator | Jan 14, 2013 to Jul 8, 2013 |
| 2013 1st Special Session | Senate | 14 | Democratic | Senator | Sep 30, 2013 to open |
| 2014 Regular Session | Senate | 14 | Democratic | Senator | Feb 3, 2014 to Mar 7, 2014 |
| 2015 Regular Session | Senate | 14 | Democratic | Senator | Jan 12, 2015 to Jul 6, 2015 |
| 2016 Regular Session | Senate | 14 | Democratic | Senator | Feb 1, 2016 to Mar 3, 2016 |
| 2017 Regular Session | Senate | 14 | Democratic | Senator | Jan 9, 2017 to Jul 7, 2017 |
| 2018 Regular Session | Senate | 14 | Democratic | Senator | Feb 5, 2018 to open |
| 2018 1st Special Session | Senate | 14 | Democratic | Senator | May 21, 2018 to open |
| 2019 Regular Session | Senate | 14 | Democratic | Senator | Jan 14, 2019 to Jul 14, 2019 |
| 2020 Regular Session | Senate | 14 | Democratic | Senator | Feb 3, 2020 to Mar 8, 2020 |
| 2020 1st Special Session | Senate | 14 | Democratic | Senator | Jun 24, 2020 to Jun 26, 2020 |
| 2020 2nd Special Session | Senate | 14 | Democratic | Senator | Aug 10, 2020 to Aug 10, 2020 |
| 2020 3rd Special Session | Senate | 14 | Democratic | Senator | Dec 21, 2020 to open |
| 2007 - 2008 Interim | Senate | 14 | Democratic | Senator | Jun 30, 2007 to Jan 11, 2009 |
| 2009 - 2010 Interim | Senate | 14 | Democratic | Senator | Jun 30, 2009 to Jan 9, 2011 |
| 2011 - 2012 Interim | Senate | 14 | Democratic | Senator | Jun 30, 2011 to Jan 13, 2013 |
| 2013 - 2014 Interim | Senate | 14 | Democratic | Senator | Jul 8, 2013 to open |
| 2015-2016 Interim | Senate | 14 | Democratic | Senator | Jul 7, 2015 to open |
| 2017-2018 Interim | Senate | 14 | Democratic | Senator | Jul 11, 2017 to open |
| 2019-2020 Interim | Senate | 14 | Democratic | Senator | Jun 14, 2019 to open |
OLIS session roster; membership is recorded per session, not by exact seating and departure dates
Committee leadership
Chair · Education and General Government · 2009RChair · Education and General Government · 2009iChair · Education and General Government · 2010 SpeChair · Education and Workforce Development · 2011RChair · Education and Workforce Development · 2011iCo-Chair · University Governance (HB 4061) · 2011iChair · Education and Workforce Development · 2012RChair · Education and Workforce Development · 2013RChair · Education and Workforce Development · 2013iChair · Education and Workforce Development · 2014RChair · Finance and Revenue · 2015RCo-Chair · Tax Credits · 2015RChair · Finance and Revenue · 2015-2016 InterimChair · Finance and Revenue · 2016RChair · Finance and Revenue · 2017RCo-Chair · Tax Credits · 2017RCo-Chair · Tax Reform · 2017RChair · Conduct · 2017-2018 InterimChair · Finance and Revenue · 2017-2018 InterimChair · Conduct · 2018RChair · Finance and Revenue · 2018RVice-Chair · General Government and Accountability · 2018RChair · Finance and Revenue · 2019RCo-Chair · Revenue · 2019RCo-Chair · Tax Expenditures · 2019RChair · Finance and Revenue · 2019-2020 InterimChair · Finance and Revenue · 2020R
About these figures
Appointed by President of the Senate (Senate Rule 8.05); Speaker and President jointly, or as provided by law.
Committee memberships (58)
Bottle Bill Task Force · 2007iEducation and General Government · 2007iFinance and Revenue · 2007iWays and Means · 2007iEducation and General Government · 2008 SpeFinance and Revenue · 2008 SpeEnvironment and Natural Resources · 2009RFinance and Revenue · 2009RHB 3089 · 2009RSB 767 · 2009REnvironment and Natural Resources · 2009iFinance and Revenue · 2009iPublic Education Appropriation · 2009iEnvironment and Natural Resources · 2010 SpeFinance and Revenue · 2010 SpeEnvironment and Natural Resources · 2011RFinance and Revenue · 2011RTax Credits · 2011REconomic Development · 2011iEnvironment and Natural Resources · 2011iFinance and Revenue · 2011iPublic Education Appropriation (ORS 171.857) · 2011iTax Credits · 2011iEnvironment and Natural Resources · 2012RFinance and Revenue · 2012RSB 1563 B · 2012RTax Credits · 2012REconomic Development · 2012S1Environment and Natural Resources · 2013RFinance and Revenue · 2013RHB 2898 · 2013RTax Credits · 2013REnvironment and Natural Resources · 2013iFinance and Revenue · 2013iPublic Education Appropriation · 2013iEnvironment and Natural Resources · 2014RFinance and Revenue · 2014REducation · 2015REducation · 2015-2016 InterimReserve Funds · 2015-2016 InterimEducation · 2016REducation · 2017RGeneral Government and Accountability · 2017REducation · 2017-2018 InterimGeneral Government and Accountability · 2017-2018 InterimSole Proprietors · 2017-2018 InterimStudent Success · 2017-2018 InterimEducation · 2018RStudent Success · 2018RSole Proprietors · 2018S1Business and General Government · 2019REducation · 2019RStudent Success · 2019REducation · 2019-2020 InterimLabor and Business · 2019-2020 InterimPublic Education Appropriation · 2019-2020 InterimEducation · 2020RLabor and Business · 2020R
Votes in the reconstructed cases
- HB 2017 (2017)HB 2017 · Aye Jul 6
- 2013 special sessionHB 5101 · Aye Oct 2SB 861 · Aye Oct 2SB 862 · Aye Oct 2SB 863 · Nay Oct 2HB 3601 · Aye Oct 2
- Senate walkoutsHB 2020 · Aye Jun 29
About these figures
A recorded vote is a documented position on that question on that day. It is not evidence of what the member sought or conceded.
Evidence for this page
Every row comes from the Oregon Legislative Information System’s official rosters and committee memberships, observed 2026-09-01. Roster codes recorded: Sen Hass.
Rosters are per session; exact seating and departure dates within a session, and the reasons for any replacement, are in the chamber journals and are not claimed here.
Nothing on this page describes campaign finance, private employment, or personal life. Those are outside the institutional record this site publishes. Cite as: Oregon Governance Atlas, “Mark Hass,” edition dated August 31, 2026. Regenerated 2026-09-04.