75th Colorado General Assembly

• November 12, 2024: One week after reelection, Senator Chris Hansen resigned to serve as CEO of the La Plata Electrical Association.{{Cite web |last1=Birkeland |first1=Bente |last2=Brasch · |first2=Sam |date=2024-11-12 |title=State Sen. Chris Hansen will leave the legislature to lead the La Plata Electrical Association |url=https://www.cpr.org/2024/11/12/state-sen-chris-hansen-will-leave-the-legislature-to-lead-the-la-plata-electrical-association/ |access-date=2025-04-08 |website=Colorado Public Radio |language=en}}
• November 21, 2024: Senator Janet Buckner announces her resignation, effective January 8.
• January 6, 2025: Colorado Representative Iman Jodeh is selected to represent the 29th Senate district by vacancy committee, replacing Buckner.{{Cite web |last=Goodland |first=Marianne |date=2025-01-06 |title=Arapahoe County Democrats choose Rep Iman Jodeh to replace District 29 Sen. Janet Buckner |url=https://www.coloradopolitics.com/news/democratic-vacancy-committee-chose-rep-jodeh/article_2a560136-cc94-11ef-aba3-87d3b65d3b7b.html |access-date=2025-04-08 |website=Colorado Politics |language=en}}{{Cite web |last=Birkeland · |first=Bente |date=2024-11-21 |title=Colorado State Sen. Janet Buckner to resign |url=https://www.cpr.org/2024/11/21/colorado-state-senator-janet-buckner-to-resign/ |access-date=2025-04-08 |website=Colorado Public Radio |language=en}}
• January 7, 2025: Matthew Ball is selected by vacancy committee to represent the 31st Senate district, replacing Hansen.
• February 17, 2025: Senator Sonya Jaquez Lewis resigns amid an ethics investigation.{{Cite web |last1=Wilson |first1=Sara |last2=February 18 |first2=Colorado Newsline |title=Sen. Sonya Jaquez Lewis resigns from Colorado Senate amid ethics investigation • Colorado Newsline |url=https://coloradonewsline.com/briefs/sonya-jaquez-lewis-resigns/ |access-date=2025-04-08 |website=Colorado Newsline |language=en-US}}
• March 18, 2025: Katie Wallace is selected by vacancy committee to replace Jaquez Lewis in representing the 17th Senate district.{{Cite web |last=Paul |first=Jesse |date=2025-03-19 |title=Katie Wallace selected by Democratic vacancy committee to replace Colorado senator who resigned amid controversy |url=https://coloradosun.com/2025/03/18/katie-wallace-sonya-jaquez-lewis-colorado-senate/ |access-date=2025-04-08 |website=The Colorado Sun |language=en-US}}
• June 9, 2025, Senate Minority Leader Paul Lundeen announced his resignation from the Senate.{{Cite web |last=Radio |first=Jesse Paul, Bente Birkeland, Colorado Public |date=2025-06-09 |title=Top Republican in Colorado Senate resigns to take private sector job |url=http://coloradosun.com/2025/06/09/paul-lundeen-resigns-colorado-senate/ |access-date=2025-06-09 |website=The Colorado Sun |language=en-US}}
• June 30, 2025: Lynda Zamora Wilson is selected by vacancy committee to replace Lundeen in representing the 9th Senate district.{{Cite web |last=Ventrelli |first=Marissa |date=2025-07-01 |title=Colorado Senate District 9 vacancy filled by Lynda Zamora Wilson in El Paso County |url=https://www.coloradopolitics.com/elections/lynda-wilson-selected-senate-district-9/article_d618a719-567f-48a8-8f36-ef810a33301c.html |access-date=2025-07-09 |website=Colorado Politics |language=en}}

• November 8, 2024:
• Former Senate President Pro Tempore James Coleman is elected to serve as Senate President, replacing outgoing term-limited President Steve Fenberg. Coleman's election is not official until a formal vote may occur on the first day of the 75th General Assembly.{{Cite web |last=Birkeland · |first=Bente |date=2024-11-08 |title='We will show the country why Colorado is special' — Senate Democrats pick new leader as legislature looks toward a year of belt tightening |url=https://www.cpr.org/2024/11/08/colorado-state-democrats-pick-new-senate-president-james-coleman/ |access-date=2025-04-08 |website=Colorado Public Radio |language=en}}
• Senator Lisa Cutter is elected to serve as Senate majority leader, replacing Senator Faith Winter, who did not seek reelection for the position.
• Senator Dafna Michaelson Jenet is elected to serve as Senate Pro Tempore.
• Senator-Elect Judy Amabile is appointed to serve on the coveted Joint Budget Committee, replacing Rachel Zenzinger, who was term-limited.
• Senators Nick Hinrichsen and Dylan Roberts are elected to serve as Senate majority caucus co-chairs, replacing Senator Janet Buckner, who did not seek reelection to the position.
• Representative Anthony Hartsook is elected to serve as House minority caucus chair, replacing Representative Mary Bradfield, who did not seek reelection to the position.{{Cite web |last=Ventrelli |first=Marissa |date=2024-11-08 |title=Colorado House Republicans elect new leadership for 2025 session |url=https://www.coloradopolitics.com/legislature/colorado-house-republicans-elect-new-leadership-for-2025-session/article_f3ec6dea-9df1-11ef-8138-034b248ff0a4.html |access-date=2025-04-09 |website=Colorado Politics |language=en}}
• November 11, 2024:
• Former Senate Minority whip Senator Cleave Simpson is elected to serve as Senate assistant minority leader, replacing term-limited Bob Gardner.{{Cite web |last=Goodland |first=Marianne |date=2024-11-07 |title=Colorado state Senate Republicans elect new leaders for 2025 session |url=https://www.coloradopolitics.com/news/colorado-state-senate-elects-new-leaders/article_f5800d3c-9d3e-11ef-9580-2b976ccd4137.html |access-date=2025-04-08 |website=Colorado Politics |language=en}}
• Senator Janice Rich is elected to serve as Senate minority whip.
• Senator Byron Pelton is elected to serve as Senate minority caucus chair, replacing term-limited Jim Smallwood.
• Representative Matthew Martinez is elected to serve as House majority co-whip along with then-Representative Iman Jodeh.{{Cite web |last=Goodland |first=Marianne |date=2024-11-11 |title=Colorado House Speaker McCluskie to remain in place as Democrats elect 2025 leadership |url=https://www.coloradopolitics.com/denver-gazette/house-democrats-elect-leaders/article_d263f1e2-a045-11ef-9b12-0bedfa96f46f.html |access-date=2025-04-09 |website=Colorado Politics |language=en}}
• Representative Junie Joseph is elected to serve as House majority co-caucus chair, replacing Representative Brianna Titone, who did not seek reelection to the position.
• December 9, 2024: Representative Andrew Boesenecker is appointed by Speaker Julie McCluskie to serve as Speaker Pro Tempore, replacing Representative Chris Kennedy, who was term limited.{{Cite web |last=Ventrelli |first=Marissa |date=2024-12-09 |title=Briefly {{!}} Boesenecker appointed Colorado House Speaker Pro-Tem |url=https://www.coloradopolitics.com/education/briefly-boesenecker-appointed-colorado-house-speaker-pro-tem/article_9940b6e4-b64c-11ef-ab8b-a75e41f3bae5.html |access-date=2025-04-09 |website=Colorado Politics |language=en}}
• January 10, 2025: Representative Elizabeth Velasco is elected to serve as House majority co-whip, replacing Iman Jodeh who resigned from her House seat after being appointed by vacancy committee to represent the 29th district in the Senate.{{Cite web |title=House Democrats Elect Representative Elizabeth Velasco to Leadership Team for 75th General Assembly |url=https://www.cohousedems.com/news/house-democrats-elect-representative-elizabeth-velasco-to-leadership-team-for-75th-general-assembly |access-date=2025-04-09 |website=CO House Democrats |language=en}}
• June 9, 2025: Senate Minority Leader Paul Lundeen resigns from his position as Senate Minority Leader and as state Senator.
• June 12, 2025: Assistant Senate Minority Leader Cleave Simpson is elected to serve as Senate Minority Leader following Paul Lundeen's resignation on June 9. Senator Lisa Frizell is elected to replace Simpson as Assistant Senate Minority Leader.{{Cite web |last=Radio |first=Bente Birkeland, Colorado Public |date=2025-06-13 |title=Cleave Simpson picked to lead Republicans in the Colorado Senate |url=http://coloradosun.com/2025/06/13/cleave-simpson-colorado-senate-minority-leader/ |access-date=2025-06-17 |website=The Colorado Sun |language=en-US}}

Notable legislative topics during the 75th General Assembly include workers' rights, gun regulation, and affordability. As the first regular session of the 75th General Assembly is still ongoing, most bills are still awaiting action.

The following bills have been signed into law by Colorado Governor Jared Polis.

• SB 25-003 - Bans the sale of specific semi-automatic firearms unless buyers pass a firearm safety training course.{{Cite web |date=2025-04-10 |title=Polis signs watered-down semiautomatic gun restriction bill into law |url=https://www.denver7.com/news/politics/polis-signs-watered-down-semiautomatic-gun-restriction-bill-into-law |access-date=2025-04-14 |website=Denver 7 Colorado News (KMGH) |language=en}}{{Cite web |date=2025-04-10 |title=Gov. Jared Polis signs sweeping gun law that adds requirements to buy certain semiautomatic weapons |url=https://www.denverpost.com/2025/04/10/colorado-gun-control-bill-jared-polis-sign-law-legislature/ |access-date=2025-04-14 |website=The Denver Post |language=en-US}} Sponsored by Senators Tom Sullivan and Julie Gonzales, as well as Representatives Andrew Boesenecker and Meg Froelich.{{Citation |title=Colorado General Assembly |issue=SB25-003 |url=https://leg.colorado.gov/bills/sb25-003 |access-date=2025-04-14}}
• HB25-1040 - Statutorily adds nuclear energy to the list of clean energy sources. Meant to encourage the development of nuclear energy in Colorado. Sponsored by Senators Larry Liston and Dylan Roberts, as well as Representatives Ty Winter and Alex Valdez.{{Cite web |last=Brasch · |first=Sam |date=2025-03-17 |title=Colorado lawmakers approve bill to classify nuclear power as 'clean' energy |url=https://www.cpr.org/2025/03/17/lawmakers-approve-bill-to-classify-nuclear-power-clean-energy/ |access-date=2025-04-09 |website=Colorado Public Radio |language=en}}
• HB25-1005 - Creates tax incentives for film festivals. Sponsors stated the objective of the bill was to lure the Sundance Film Festival to the state.{{Cite web |last=Sealover |first=Ed |date=2025-01-30 |title=Incentives to attract Sundance Film Festival win bipartisan legislative applause |url=https://tsscolorado.com/incentives-to-attract-sundance-film-festival-win-bipartisan-legislative-applause/ |access-date=2025-04-09 |website=The Sum and Substance |language=en-US}} Sponsored by Senators Mark Baisley and Judy Amabile, as well as Representatives Monica Duran and Brianna Titone.{{Cite web |date=2025-04-08 |title=Gov. Polis signs bill creating refundable tax credits for film festivals in Colorado |url=https://www.denver7.com/news/politics/gov-polis-signs-bill-creating-refundable-tax-credits-for-film-festivals-in-colorado |access-date=2025-04-09 |website=Denver 7 Colorado News (KMGH) |language=en}}
• SB25-014 - Repeals the constitutional ban on same-sex marriage in Colorado. Sponsored by Senator Jessie Danielson, as well as Representatives Lorena Garcia and Brianna Titone.{{Cite web |last=Ventrelli |first=Marissa |date=2025-04-07 |title=Gov. Jared Polis signs bill repealing constitutional ban on same-sex marriage in Colorado |url=https://www.coloradopolitics.com/denver-gazette/colorado-gov-polis-marriage-law/article_dc497097-ed57-4ccc-b7b4-904a662e1331.html |access-date=2025-04-09 |website=Colorado Politics |language=en}}

The following bills were vetoed by Colorado Governor Jared Polis.

• SB 25-086 - If enacted, the bill would have obligated social media platforms to more actively monitor their sites and ban users who breached their terms of service or used the platforms to break state laws. It also would have mandated improved cooperation with law enforcement. The Senate overrode the Governor's veto, but the House postponed the bill to beyond the end of the legislative session, effectively sustaining the veto.{{Cite web |date=2025-04-28 |title=Colorado lawmakers drop effort to override Gov. Polis' veto of social media bill amid intense lobbying |url=https://www.denverpost.com/2025/04/28/colorado-house-jared-polis-veto-override-social-media-bill/ |access-date=2025-04-28 |website=The Denver Post |language=en-US}}{{Cite web |date=2025-04-28 |title=Colorado House of Representatives fails to override Polis' veto of social media regulation bill |url=https://www.denver7.com/news/politics/colorado-house-of-representatives-fails-to-override-polis-veto-of-social-media-regulation-bill |access-date=2025-04-28 |website=Denver 7 Colorado News (KMGH) |language=en}}
• SB 25-027 - If enacted, the bill would have lengthened the amount of time a records custodian has to respond to a CORA request, with the exception of requests submitted by journalists.{{Cite web |last=Wilson |first=Sara |date=2025-04-18 |title=Gov. Polis vetoes bill that would extend Colorado open records response timeline • Colorado Newsline |url=https://coloradonewsline.com/2025/04/18/jared-polis-veto-colorado-open-records-response-timeline/ |access-date=2025-04-28 |website=Colorado Newsline |language=en-US}}{{Cite web |last=Moore |first=Marylin |date=April 17, 2025 |title=Gov. Polis vetoes Colorado bill slowing down open requests, giving preference to journalists |url=https://www.9news.com/article/news/politics/gov-polis-vetoes-colorado-open-requests-journalists/73-9f7fc737-d2b4-4944-ad9a-027436147c6d |website=9News}}

The following bills were not passed out of the legislature.

• SB25-201 - Would have required the implementation of age verification for pornographic websites.{{Cite web |last=Paul |first=Jesse |date=2025-04-14 |title=Colorado won't become latest state requiring porn sites to verify their users' age after lawmakers abandon bill |url=https://coloradosun.com/2025/04/14/colorado-porn-age-verification-bill-rejected/ |access-date=2025-04-14 |website=The Colorado Sun |language=en-US}} The bill was intentionally shelved on the sponsors' request in the Senate.{{Cite web |last=Ventrelli |first=Marissa |date=2025-04-14 |title=Bipartisan bill requiring age verification for adult websites in Colorado postponed until next year |url=https://www.coloradopolitics.com/legislature/colorado-age-verification-adult-websites/article_07be2aca-9d3e-4378-86ae-4260eb1d89cf.html |access-date=2025-04-14 |website=Colorado Politics |language=en}} Sponsored by Senators Paul Lundeen and Lindsey Daugherty, as well as Representatives Mandy Lindsay, and Meghan Lukens.

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{{cite web |url=https://leg.colorado.gov/legislators |title=Legislators |author= |website=Colorado General Assembly |access-date=2019-01-08}}

: *Representative was originally appointed

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Category:Colorado legislative sessions

Category:2025 U.S. legislative sessions