Portland is split among three U.S. congressional districts. Most of the city is in the 3rd District, represented by Earl Blumenauer, who served on the city council from 1986 until his election to Congress in 1996. Most of the city west of the Willamette River is part of the 1st District, represented by Suzanne Bonamici. A small portion of southwestern Portland is in the 5th District, represented by Kurt Schrader. All three are Democrats; a Republican has not represented a significant portion of Portland in the U.S. House of Representatives since 1975. Both of Oregon's senators, Ron Wyden and Jeff Merkley, are from Portland and are also both Democrats.