This week marks a flashpoint in an escalating and unprecedented fight over redistricting, with the country’s two most populous states taking center stage and control of the US House during the second half of President Donald Trump’s term potentially at stake.

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.