California Gov. Newsom moves forward with putting proposed congressional maps on the ballot in Nov. 4 special election in attempt to counter GOP redistricting in Texas.

Republicans claim California is more gerrymandered than Texas, based on a simple partisan calculation. Experts say such a comparison is one of many useful but imperfect measures to quantify gerrymandering.

Mississippi most likely will not engage in the redistricting battle because Republicans already have been helped about as much as possible in the Magnolia State. Here, there are three safe Republican U.S. House districts and one safe Democratic district.