US House, MA-05

Katherine Clark


  • Voted for the Inflation Reduction Act, the most significant action Congress has ever taken to address climate change
  • Supports a range of important policies designed to combat climate change, including the Break Free From Plastics Pollution Act, the Clean Power Plan, and increased federal funding for climate research
  • Led the House Democratic Caucus in passing legislation that will turbocharge our transition to renewable energy
  • Earned 97% lifetime score on LCV’s National Environmental Scorecard

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  • Elected Democratic Whip by her colleagues, making her the second woman to ever serve at the top of House leadership
  • Holding this seat in Massachusetts will help win a pro-environmental majority in the House, making it easier to pass climate legislation at the federal level

Candidate Background

Representative Katherine Clark is running for a sixth term to represent Massachusetts’ 5th congressional district. Clark previously served in the Massachusetts stateHouse and Senate. She is a member of the Sustainable Energy and Environment Coalition, Safe Climate Caucus, and the Bicameral Task Force on Climate Change. She has cosponsored many pieces of legislation that would  increase the development of clean energy. In addition, she has supported increased protections for Utah’s Red Rock Wilderness and the Arctic National Wildlife Refuge. In Congress, Clark will continue to be a champion for the environment and addressing the climate crisis. Representative Clark has earned a 97% lifetime score on LCV’s National Environmental Scorecard. Representative Clark is endorsed by LCV Action Fund and NRDC Action Fund.

Candidate profile pages are paid for by the League of Conservation Voters Action Fund,, and authorized by the candidate committee.