The 1860 Presidential election had three parties in the running, for Oregon.....Republican (Lincoln), Democrat (Douglas), and Southern Democrat (Breckinridge).
There were roughly 15,000 votes across the state in this election.
Lincoln won....marginally by 250 votes (getting 5,344 votes). Breckinridge came in second with 5.074. So it was fairly close.
County-wise? Lincoln took most of the coastal counties and more populated regions of the state. Breckinridge took most of the eastern part of the state and SW section.
The Constitutional Union Party did make an effort in running but barely took 250-odd votes.
So as 1864 came around? Lincoln won with 53-percent of the vote (roughly 3,000 more people voting in 1864 than in 1860).
Lincoln's prime areas? NW and SW parts of the state. Democratic strength was in the central and eastern areas of the state.