At least until 2021, when district lines will be redrawn, Longmont rests in the 4th US Congressional District. See map here.
Senator John Hickenlooper (D): 202-224-5941 (DC)
303-244-1628 (Denver), website here.
Senator Michael Bennet(D): 202-224-5852 (DC)
303-455-7600 (Denver), website here.
Representative Ken Buck (R–CD4): 202-225-4676 (DC)
970-702-2136 (Greeley), website here.
HIGHLY RECOMMENDED — RESISTBOT: Text “resist” to 50409.
The 117th Congress will convene on January 3, 2021, and will conclude on January 3, 2023. We hold a Democratic majority in the US House: 435 Representatives (Congresspersons) — 221 Ds, 211 Rs, 3 vacancies — 2-year terms, unlimited terms. And a majority in the US Senate: 100 Senators — 48 Ds, 2Is (who caucus with the Democrats) 50 Rs. Majority Leader is named by party of President, beginning on January 20, 2021, so Democrats will hold the seat of Senate Majority Leader, and Kamala Harris, as Vice President, will cast the deciding vote) — 6-year terms, unlimited terms. This is the first time the Democrats have held a full majority since 2010.