Incumbent
Katherine Clark
Incumbent Democratic candidate for U.S. House in Massachusetts
MA-05 Democratic nominee?
$20.6K
SEP 8, 2026Primary Election
Party selects its nominee.
Live Odds
Current prediction-market probability for the candidate, updated as market prices change.
Katherine Clark is trading at 100% to win the MA-05 Democratic nominee? on prediction markets.
Candidate Overview
Key details about the candidate’s background, party, office sought and current campaign.
Current roleU.S. Representative
PartyDemocratic
Political ideologyProgressive Democrat
Age63 years old (Jul 17, 1963)
GenderFemale
Show moreShow less
LocationMassachusetts
BackgroundAttorney
EducationSaint Lawrence University (B.A., 1985)
Notable personal detailsKatherine Marlea Clark is an American attorney and politician serving as the U.S. representative for Massachusetts’s 5th congressional district since 2013. She has held House Democratic leadership roles including Democratic Whip (elected fall 2022; serving since January 3, 2023) and previously served as Assistant Speaker and Vice Chair of the House Democratic Caucus. Before Congress, she served in the Massachusetts House of Representatives and Massachusetts Senate and worked in state government roles including policy leadership in the Massachusetts Attorney General’s office.
SourcesShowHide
Political Positions
Economy & Taxes
Supports higher taxes on corporations and the wealthy to fund expanded social programs and economic investments, and backs preserving or expanding tax credits and other measures that aid working families. Advocates using tax policy to reduce inequality and finance government programs such as the Child Tax Credit, health-care subsidies, and pandemic-era recovery investments.
Healthcare
Supports defending and expanding the Affordable Care Act, protecting and strengthening Medicare and Medicaid, lowering prescription drug prices, and increasing access to affordable health care and community-based services. Advocates federal investments to expand health equity and opposes cuts to Medicaid and Medicare.
Show moreShow less
Immigration & Border
Supports reforming the immigration system to expand legal pathways and provide a pathway to citizenship for undocumented immigrants (including Dreamers and TPS recipients) while calling for humane border security and protections for asylum-seekers; has backed legislation to ensure legal counsel at ports of entry and oversight to protect immigrant children and families in custody.
Abortion & Reproductive Rights
Supports federal protections for abortion access, including codifying the protections of Roe v. Wade and passage of the Women’s Health Protection Act; opposes state abortion bans and advocates for unrestricted access to reproductive health care with medical exceptions. Has publicly framed reproductive freedom as a fundamental right and has sponsored/advocated for legislation to protect and expand abortion and reproductive services.
Climate & Energy
Supports federal climate investments, clean energy development, and climate resilience projects while backing measures that incentivize energy efficiency and clean-technology research. Emphasizes implementation of the Inflation Reduction Act and securing federal funding for local resiliency, weatherization, and clean-energy programs in Massachusetts’ 5th District.
Public Safety & Guns
Supports reinstating a federal assault weapons ban, universal background checks, red flag laws, bans on high-capacity magazines and ghost guns, and other expanded gun-safety measures while funding research and prevention.
Latest News
Katherine Clark is in the news mainly because she joined Massachusetts Democrats calling for action against President Trump over his threats related to Iran, including a leadership statement pushing Congress to respond. More recently, she has also been part of broader Democratic debates over the party’s direction, as primary results and polling show voters favoring change and internal divisions over ideology. The coverage around her is mostly about her role in party leadership rather than any new personal campaign move.
Markey calls for Trump to be removed from office over increased threats to Iran
Mass. 2026 Primary: Here’s what you need to know
Democratic voters are making clear they just want change
‘One man, one vote’? Maybe Not in Trump’s America
Campaign Fundraising
Latest report: Cycle 2026Campaign finance totals from the latest available reporting period.
2024
2026
LatestCycle 2024
Cycle 2026
Source: FEC
New updates coming soon
We're monitoring and will update when new data impacts the race.
- Polls
- Endorsements