The Oregonian (9/3/21) on Democrats' and Republicans' Competing U.S. House Maps and What the Process Is (OREGON)

Oregon's U.S. House districts are determined by the state legislature and governor -- the way it is in most states -- but there are some interesting twists in the process this year. This Oregonian article describes the situation.

First, Oregon's delegation will increase from five to six seats. A change in the number automatically entails disruption to the existing map.

Second, even though the Democrats hold majorities in both the state House and state Senate, the House Redistricting Committee has an equal number of D and R members, thanks to a deal the parties made in organizing the House for this current session. The GOP members on this committee can therefore prevent the Democrats' favored bill (which would lean toward giving the Democrats a 5-1 advantage in the state's U.S. House delegation) from getting to the floor of the state House. The Democrats' proposed map, as well as the Republicans' (which aims to yield a 3-3 split) are shown in the above-linked Oregonian article. 

Third, should the legislature fail to approve a map or Gov. Kate Brown (D) veto the legislature's map, the ultimate decision on districts would fall to Oregon Secretary of State Shemia Fagan, a Democrat. A few scenarios seem possible. One is that the legislative passes a compromise plan that perhaps has four Democratic-leaning seats, one GOP-leaning seat, and one toss-up. Even if the legislature passes such a bill, however, Brown could simply veto it and send the matter to Fagan.