In the Senate, the Democrats kept a 16–14 majority, identical to their advantage in the previous legislative session.

[1] In the previous session, Democrats controlled the Senate with a 16–14 majority.

Of the 16 seats up for election, eight were previously held by Democrats, and eight by Republicans.

In the previous session, the house was evenly split between Democrats and Republicans, 30–30.

Oregon Secretary of State - November 6, 2012, General Election Abstract of Votes