The following is a list as to how the state congressional delegations will divide based upon party preferences and their individual structures for redistricting. The red states highlight the places where Republicans have a majority in the congressional delegation; the blue where Democrats control:
- Alabama: 6 Rs – 1D – GOP in total control of redistricting
- Alaska: 1R; at-large; congressional redistricting not a factor
- Arizona: 5Rs – 3Ds; Independent commission; state will gain one seat
- Arkansas: 3Rs – 1D; Dems in total control
- California: 33Ds – 19Rs – 1 undecided; new commission for redistricting
- Colorado: 4Rs – 3Ds; split control with Rs taking state House by one vote
- Connecticut: 5Ds; Dems in total control
- Delaware: 1D; at-large; congressional redistricting not a factor
- Florida: 19Rs – 6Ds; Rs in control, but new ballot initiative places severe restrictions on drawing redistricting maps; state will one or two seats
- Georgia: 8Rs – 5Ds – Rs in total control; state will gain one seat
- Hawaii: 2Ds – Dems in total control
- Idaho: 2Rs – Independent commission
- Illinois: 10Rs – 8Ds – 1 undecided; Dems in total control; state loses one seat
- Indiana: 6Rs – 3Ds – Rs in total control
- Iowa: 3Ds – 2Rs – Split control; state loses one seat
- Kansas: 4Rs – Rs in total control
- Kentucky: 4Rs – 2Ds – Split control
- Louisiana: 6Rs – 1D – Split control; state loses one seat
- Maine: 2Ds; GOP in total control
- Maryland: 6Ds – 2Rs; Dems in total control
- Massachusetts: 10Ds; Dems in total control; state loses one seat
- Michigan: 9Rs – 6Ds: GOP in total control; state loses one seat
- Minnesota: 4Ds – 4Rs; Split control; state could possibly lose one seat
- Mississippi: 3Rs – 1D; Split control
- Missouri: 6Rs – 3Ds; Split control; state could possibly lose one seat
- Montana: 1R; at-large; congressional redistricting not a factor
- Nebraska: 3Rs; GOP in virtual control
- Nevada: 2Rs – 1D; Split control; state will gain one seat
- New Hampshire: 2Rs; Split control
- New Jersey: 7Ds – 6Rs; Independent commission; loses one seat
- New Mexico: 2Ds – 1R; Split control
- New York: 20Ds – 7Rs – 2 undecided; Split control; state will lose one or two seats
- North Carolina: 7Ds – 6Rs; GOP controls; Gov has no veto over redistricting
- North Dakota: 1R; at-large; congressional redistricting not a factor
- Ohio: 13Rs – 5Ds; GOP in total control; state will lose two seats
- Oklahoma: 4Rs – 1D; GOP in total control
- Oregon: 4Ds – 1R; Split control; could gain one seat
- Pennsylvania: 12Rs – 7Ds; GOP in total control; state will lose one seat
- Rhode Island: 2Ds; Dems in total control
- South Carolina: 5Rs – 1D; GOP in total control; state gains one seat
- South Dakota: 1R; at-large; congressional redistricting not a factor
- Tennessee: 7Rs – 2Ds; GOP in total control
- Texas: 23Rs – 9Ds; GOP in total control; could gain as many as four seats
- Utah: 2Rs – 1D; GOP in total control; state gains one seat
- Vermont: 1D; at-large; congressional redistricting not a factor
- Virginia: 8Rs – 3Ds; split control
- Washington: 5D – 4R; Independent commission
- West Virginia: 2Rs – 1D; Dems in total control
- Wisconsin: 5Rs – 3Ds; GOP in total control
- Wyoming: 1R; at-large; congressional redistricting not a factor
Notes: Republicans have the majority in 33 states; Democrats 16; with one split delegation (MN).
Because of their off-year calendar for legislative elections, New Jersey and Virginia will be the first two states to begin redistricting, and will do so shortly after the new year.
California is listed as having only one outstanding congressional race because Rep. Jerry McNerney (D-CA-11) has now pulled ahead of Republican attorney David Harmer by more than 2,200 votes and trends suggest that the incumbent will retain this seat.
