Sierra Club Maryland

https://www.sierraclub.org/maryland/2018-endorsements

Progressive Maryland

http://www.progressivemaryland.org/endorsements

Working Families

http://workingfamilies.org/2018/09/wfp-2018-endorsed-candidates/

1199 SEIU

https://www.1199seiu.org/maryland_dc/1199seiu-maryland-members-announce-midterm-endorsements

Clean Water Action Maryland

https://www.cleanwateraction.org/2018/05/21/endorsements-2018-maryland-election

Progressive Neighbors Maryland

http://www.progressiveneighborsmd.org/#%endorsement

NARAL Pro Choice Maryland

https://prochoicemd.org/2018/05/04/naral-pro-choice-maryland-pac-announces-endorsements-2018-maryland-election/

Indivisible Maryland

https://imelection.com/endorsements/