I wanted to flag this valuable resource that Jon Eguia has just made public. It calculates the expected partisan bias of each congressional map, and of the U.S. House as a whole, using a range of common metrics. It also helpfully reports these biases in seats, making it obvious what each state’s contribution is to the overall skew of the U.S. House. In sum, using the efficiency gap, the U.S. House is expected to be biased in a Republican direction by about ten seats. That’s a substantial but not enormous tilt, about the same as that exhibited by the U.S. House over the last couple elections (but around half the level directly after the last round of redistricting).