May 6, 2021
KEY POINTS FROM THIS ARTICLE
— A majority of states are now either solidly Republican or solidly Democratic on the presidential level, and the party a state prefers for president increasingly has a big edge in winning the state’s two Senate seats. Given these patterns, it’s possible to game out the basic contours of what the Senate “should” look like in the near future, barring some unexpected upheaval.
— Allocating Senate seats based on current presidential preferences produces an equilibrium of about 53 seats for the Republicans and 47 seats for the Democrats.
— This complicates the Democrats’ decision on whether to ditch the filibuster, because in a chamber where they may end up spending a lot of time in the minority in the future, ending the filibuster may destroy one of the few points of leverage the party would have.