
Historical · U.S. House · Arizona · District 1
Tom O’Halleran
Former U.S. Representative · Arizona District 1 · 2017–2023 · Democratic
Tom O’Halleran represented Arizona's District 1 in the United States House of Representatives (2017–2023) for the Democratic party. The page below collects sourced biographical facts, term history, committee roles, and provenance for O’Halleran.
Bioguide ID: O000171
Key facts
- Full name
- Tom O’Halleran
- State
- Arizona
- District
- District 1
- Party
- Democratic
- House service
- 2017–2023
- First House term
- 2017
- Status
- Left office
- Current term ends
- —
- Born
- 1946
- Bioguide ID
- O000171
- Committee assignments
- —
- Dataset version
- 20260604
Biographical narrative
929 words · sourced from the Wikipedia REST extract
Thomas Charles O'Halleran is a former U.S. Representative who served Arizona's 1st congressional district from 2017 until January 3, 2023. Initially a member of the Republican Party, he transitioned to the Democratic Party in 2015. Throughout his political career, O'Halleran has held various positions, including serving in the Arizona state legislature and as a senior advisor in the U.S. Department of Agriculture under the Biden administration. His legislative focus has included issues related to agriculture, energy, and public welfare.
Early life and career
Tom O'Halleran was born on January 24, 1946, in Chicago, Illinois. He completed his early education at Providence St. Mel School and subsequently attended Lewis University for one year. His career began in law enforcement when he joined the Chicago Police Department, serving from 1966 until 1975. Following his tenure in policing, O'Halleran transitioned to the financial sector, becoming a member of the Chicago Board of Trade. He operated his own futures trading business, specializing in futures contracts related to 10-year U.S. Treasury notes.
O'Halleran's political career began in Arizona, where he initially served as a Republican. He was elected to the Arizona House of Representatives in 2001, where he served until 2007. He then advanced to the Arizona State Senate, representing the 1st district from 2007 to 2009. His time in the state legislature was marked by a focus on local issues, although he lost his seat in a primary election in 2008. After his legislative career, he hosted a radio show on KAZM in Sedona, Arizona, before making a significant political shift.
In 2014, O'Halleran left the Republican Party, citing dissatisfaction with its policies on education, water, and child welfare. He ran as an independent candidate for the Arizona State Senate in 2014 but was unsuccessful, losing by a narrow margin. His political evolution continued as he announced his candidacy for the U.S. House of Representatives as a Democrat in 2015.
House tenure
O'Halleran officially launched his campaign for Arizona's 1st congressional district on August 6, 2015. His campaign was characterized by a commitment to government regulations that promote renewable energy sources, particularly wind and solar power. In May 2016, he was recognized as a priority candidate by the Democratic Congressional Campaign Committee, which placed him on its Red to Blue list. O'Halleran secured the Democratic nomination by defeating Miguel Olivas in the primary held on August 30, 2016. He subsequently won the general election against Republican Paul Babeu and Green Party candidate Ray Parrish, receiving 51% of the vote.
In the 2018 election, O'Halleran ran unopposed in the Democratic primary and successfully defeated Republican Wendy Rogers in the general election, garnering 54% of the votes. He continued to serve in the House, winning reelection in 2020 against Republican Tiffany Shedd with 51.6% of the vote.
However, O'Halleran faced a challenging reelection campaign in 2022. Following the decennial redistricting, his district was renumbered as the 2nd congressional district and became significantly more Republican, incorporating areas like Prescott. In the general election, he lost to Republican Eli Crane, winning only in the more Democratic-leaning counties of Coconino and Apache.
During his tenure in the House, O'Halleran was present at the U.S. Capitol on January 6, 2021, when the Capitol was stormed. He was evacuated to a secure location along with other members of Congress. Following the events of that day, he voted in favor of a resolution urging Vice President Mike Pence to invoke the Twenty-fifth Amendment to remove President Donald Trump from office and later supported the second impeachment of Trump.
Legislative focus and committees
Throughout his time in Congress, O'Halleran served on several key committees, including the Committee on Agriculture and the Committee on Energy and Commerce. Within the Committee on Agriculture, he was involved in various subcommittees, such as those focusing on commodity exchanges, energy, and credit, as well as conservation and forestry. His work on these committees reflected his interest in agricultural policy and energy issues, particularly in relation to renewable resources.
O'Halleran was also an active member of several caucuses, including the Blue Dog Coalition, where he served as chair for communications, the New Democrat Coalition, the Congressional LGBT Equality Caucus, and the Problem Solvers Caucus. His participation in these groups indicated a commitment to bipartisan cooperation and a focus on moderate, pragmatic solutions to legislative challenges.
In terms of his political positions, O'Halleran was known for voting in alignment with President Joe Biden's policies consistently. He identified as pro-choice but had a mixed record on abortion-related legislation, having previously voted for a ban on abortions after 20 weeks while opposing the 2022 overturning of Roe v. Wade. His stance on energy issues included support for renewable energy initiatives, and he had previously introduced legislation aimed at providing tax incentives for businesses utilizing renewable energy.
O'Halleran's foreign policy views included support for a two-state solution in the Israeli-Palestinian conflict, despite ongoing Israeli settlements in the West Bank. He was also vocal about government spending, criticizing cuts proposed by the Trump administration that would affect various federal agencies and programs.
In the realm of gun policy, O'Halleran expressed a long-standing support for expanded background checks and indicated a willingness to reassess his position on gun control following mass shootings. His immigration stance was marked by opposition to policies that he believed contradicted American values, particularly during the Trump administration's implementation of a travel ban targeting predominantly Muslim countries.
After concluding his congressional service, O'Halleran was appointed as a senior advisor to the U.S. Department of Agriculture in the Biden administration, continuing his engagement in public service and policy-making.
Notable legislation
Sponsored and co-sponsored legislation for Tom O’Halleran is pending operator curation. The biographical narrative above carries the same provenance trail until per-bill rows are written.
Sources
- [1]https://en.wikipedia.org/wiki/Tom_O'HalleranWikipedia · retrieved 2026-06-04
Notable quotes
Sourced quotes for Tom O’Halleran are pending operator curation. Narrative-scope provenance remains attached below.
Sources
- [1]https://en.wikipedia.org/wiki/Tom_O'HalleranWikipedia · retrieved 2026-06-04
Key positions
Curated policy positions for Tom O’Halleran are pending operator review. The biographical narrative above carries the same provenance trail until per-topic positions are written.
Sources
- [1]https://en.wikipedia.org/wiki/Tom_O'HalleranWikipedia · retrieved 2026-06-04
Terms served
- 2017–2019U.S. House · Term 1 · Democratic
- 2019–2021U.S. House · Term 2 · Democratic
- 2021–2023U.S. House · Term 3 · Democratic
Sources & provenance
Every attributable claim above carries a per-section [N] marker that resolves to the corresponding URL below. Each entry records the upstream provider, the canonical URL, and the timestamp at which the source was retrieved by the ingest pipeline.
Key facts
- https://bioguide.congress.gov/search/bio/O000171bioguide · retrieved 2026-06-04
- https://ohalleran.house.govhouse.gov · retrieved 2026-06-04
Biographical narrative
- https://en.wikipedia.org/wiki/Tom_O'Halleranwikipedia · retrieved 2026-06-04
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