As a result of the 2022 elections, the congressional delegations of 12 states will become more Republican because Republicans in those states gained seats, Democrats lost seats, or a combination of the two. The congressional delegations of nine states will become more Democratic because Democrats in those states gained seats, Republicans lost seats, or a combination of the two.

New York and Florida experienced the largest swings in total seats toward Republicans. In New York, Democrats lost four seats and Republicans gained three, while in Florida, Democrats lost three seats and Republicans gained four.

Illinois, Pennsylvania, Ohio, and North Carolina experienced the largest swings in total seats toward Democrats. In Illinois, Pennsylvania, and Ohio, Democrats gained one seat and Republicans lost two seats, while in North Carolina, Democrats gained two seats and Republicans lost one.

Despite gaining two seats due to apportionment, the partisan split of Texas’ congressional delegation remained the same as each party won one of the newly created seats.

The 2022 election was the first election after the 2020 census, and the size of some state delegations changed as a result of the congressional apportionment process. Five states gained seats and will send larger delegations to the 118th Congress. Colorado, Florida, Montana, North Carolina, and Oregon gained one seat each, and Texas gained two seats. Seven states — California, Illinois, Michigan, New York, Ohio, Pennsylvania, and West Virginia — lost one seat each due to the 2020 census and will send smaller delegations to the 118th Congress.

Thirty-three states will send at least one new member to the 118th Congress, while 17 states will send the same members of Congress that represented them at the start of the 117th Congress.

Oregon will send the greatest percentage of new members to the 118th Congress: 37.5% of the Oregon delegation was not seated at the start of the 117th Congress.