the Census Bureau released its population estimates for 2017 for every state, detailing how many residents each state has gained or lost since the 2010 census. The firm Election Data Services has used these estimates to project how many congressional seats each state might gain or lose in the 2020 round of reapportionment, which assigns each state its share of the House’s 435 districts based on its population.
Reapportionment is a forgotten step. Before a state can redistrict the congressional districts within the state, every 10 years, the Federal government is constitutionally required to conduct a census with the main goal of being able to reapportion the congressional seats based on the decennial census. The upcoming 2020 Census is big deal, showing regional population shifts with political ramifications.