We'll start with a look at the 8th District, a competitive seat where the Democrats put in a significantly stronger performance at the top of the ticket. Biden won this constituency, which includes the suburbs to east Seattle and two rural counties east of the Cascades [52-45], which was more than double Clinton's 48-45 margin.
In 2018, between these presidential races, Democrat Kim Schrier dyed this seat blue when she was won a very expensive open seat competition 52-48. Unexpected, Schrier won by the same margin this year against underfunded Republican Jesse Jensen in a race that has not attracted serious outside spending from either party.
While the 8th district was the closest seat to the state in the 2016 presidential election, the GOP-held 3rd district will get that title for 2020. That seat in the southern part of the state supported Trump 51-47, a decrease from his 50 -43 shows four years earlier.
Despite this postponement, however, Republican MP Jaime Herrera Beutler defeated Democrat Carolyn Long 57-43 in a rematch that attracted serious outside spending from both sides in the late weeks of the campaign; Herrera Beutler had beaten Long through a smaller 53-47 spread two years earlier. Trump had few problems promoting the 4th and 5th Districts in the east of the state, while Biden easily won the remaining six seats.
Democrats control both the legislature and the governorship, but they have limited say in redistribution. Instead a non-partisan commission Consisting of a representative appointed by each of the four legislative majority and minority party leaders, he is tasked with making the maps. While the Commission's proposals must be approved by the legislature, state law prohibits the legislature from making major changes. If there was a deadlock in the commission, the courts would create the new cards instead.