U.S. Senator · Washington

Maria Cantwell

Democrat

Make your voice heard

Send Maria a physical postcard — printed on heavy cardstock and mailed by USPS First Class to Capitol Hill. It cannot be deleted or filtered like an email.

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Official Contact

Mailing Address

511 Hart Senate Office Building Washington DC 20510

Phone

202-224-3441

Congressional offices receive tens of thousands of emails per week — filtered, sorted, and often mass-deleted. A postcard is a tangible object that must be physically handled by a staffer, proving you are a real constituent in their district. Learn more →