Sierra Club Indian Peaks Group
organization · Local group of Sierra Club; Sierra Club political program (group-specific legal form not established)
https://www.sierraclub.org/colorado/indian-peaks
Who they are
The Indian Peaks Group is Sierra Club’s Boulder County local group. Its 2026 release endorses one mayoral candidate and five council candidates; a favorable “nod” to an additional ranked-choice option is not treated as a formal endorsement.
In their words: The mission of the Sierra Club political program is to preserve the environment through nonpartisan grassroots political action.
source
Leadership on file
- Steve Welter — Political Committee contact source
Money
No funding information verified.
How they decide
The group says its political program aims to elect candidates who support environmental protection; a 2026 press release explains policy reasons for each endorsement. Questionnaire/interview details not established. source
2026 positions
What the labels on each endorsement mean
- Endorser's own statement
- The organization or person announced it themselves (their site, their press release, or a news story reprinting that release).
- “X campaign lists Y”
- Only the candidate's (or ballot campaign's) own website says so. We didn't find the endorser saying it. It may be true, but it is the campaign's claim.
- City filing
- A committee's registration with the city clerk names the candidate or measure it supports.
- News listing
- A news outlet lists the endorsement, but we did not find the endorser's own statement.
Titles (e.g. “U.S. Representative”) are as printed on the cited page and describe the person, not an endorsement by their office. A blank title means the source did not give one.
Candidates
- Endorses: Aaron Brockett (mayor)Endorser's own statement. Sierra Club Endorses Boulder Mayoral and City Council Candidates (press release, Yellow Scene) · 2026-09-17
- Endorses: Jill Grano (council)Endorser's own statement. Sierra Club Endorses Boulder Mayoral and City Council Candidates (press release, Yellow Scene) · 2026-09-17
- Endorses: Rachel Rose Isaacson (council)Endorser's own statement. Sierra Club Endorses Boulder Mayoral and City Council Candidates (press release, Yellow Scene) · 2026-09-17
- Endorses: Tina Marquis (council)Endorser's own statement. Sierra Club Endorses Boulder Mayoral and City Council Candidates (press release, Yellow Scene) · 2026-09-17
- Endorses: Ryan Schuchard (council)Endorser's own statement. Sierra Club Endorses Boulder Mayoral and City Council Candidates (press release, Yellow Scene) · 2026-09-17
- Endorses: Tara Winer (council)Endorser's own statement. Sierra Club Endorses Boulder Mayoral and City Council Candidates (press release, Yellow Scene) · 2026-09-17
These are positions this group, or a campaign where labelled, has published. A race with nothing listed doesn't mean the group is against anyone.
Earlier endorsements
Profile sources
- https://www.sierraclub.org/colorado/indian-peaks/politics-and-issues
- https://yellowscene.com/2026/09/17/sierra-club-endorses-boulder-mayoral-and-city-council-candidates
- https://www.sierraclub.org/colorado/indian-peaks/local-endorsements
Profile compiled 2026-09-24.