The Portland Oregonian, Oregon's largest newspaper, has called the Senate race in favor of Democratic candidate Jeff MerkleyJeffrey (Jeff) Alan MerkleyAvalanche of Democratic senators say Franken should resign Senate nixes provision boosting conservative college after uproar Overnight Energy: Panel advances controversial Trump nominee | Ex-coal boss Blankenship to run for Senate | Dem commissioner joins energy regulator MORE.

The Associated Press and other news organizations have not made the call.

The Oregonian notes that incumbent GOP Sen. Gordon Smith's campaign is still arguing "vigorously that the race isn't over."

The paper made its projection based on a "mathematical analysis of the remaining 340,000 votes still being counted out of a total 1.8 million vote cast statewide."

If the Merkley call stands, Democrats would add one more to their Senate gains this cycle, bringing the total to 57 caucus members. Senate races in Alaska, Minnesota and Georgia yet to be called.

-- Manu Raju