States that voted for Biden lose 3 net House seats after Census count Data: U.S. Census Bureau; Map: Danielle Alberti/Axios Population shifts mean five states that voted for Joe Biden will lose seats in the House when congressional districts are redrawn later this year, new Census numbers released Monday show, but will gain seats in two other states. Only two Trump-voting states will lose a seat. Why it matters: Apportionment and redistricting — the process of redistributing political power among and within the states— comes as Democrats hold slim majorities in both congressional chambers and Republicans have a strong grip on the process of re-drawing district lines.